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! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.11 \begin{flashcard}
                      {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.11 \begin{flashcard}{这
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.14 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.15 \begin{flashcard}
                      {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.15 \begin{flashcard}{说
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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 ...                                              
                                                  
l.18 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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 ...                                              
                                                  
l.19 \begin{flashcard}
                      {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
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l.19 \begin{flashcard}{问
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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l.22 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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l.23 \begin{flashcard}
                      {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
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Type  H <return>  for immediate help.
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l.23 \begin{flashcard}{看
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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l.26 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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l.27 \begin{flashcard}
                      {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
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l.27 \begin{flashcard}{昨
                          天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
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l.27 \begin{flashcard}{昨天
                             }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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l.30 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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l.31 \begin{flashcard}
                      {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
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 ...                                              
                                                  
l.31 \begin{flashcard}{来
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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l.34 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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l.35 \begin{flashcard}
                      {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.35 \begin{flashcard}{妈
                          妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
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 ...                                              
                                                  
l.35 \begin{flashcard}{妈妈
                             }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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 ...                                              
                                                  
l.38 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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l.39 \begin{flashcard}
                      {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.39 \begin{flashcard}{学
                          生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.39 \begin{flashcard}{学生
                             }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.42 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.43 \begin{flashcard}
                      {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.43 \begin{flashcard}{好
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.46 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.47 \begin{flashcard}
                      {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.47 \begin{flashcard}{知
                          道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.47 \begin{flashcard}{知道
                             }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.50 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.51 \begin{flashcard}
                      {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.51 \begin{flashcard}{学
                          校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.51 \begin{flashcard}{学校
                             }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.54 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.55 \begin{flashcard}
                      {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.55 \begin{flashcard}{有
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
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l.58 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.59 \begin{flashcard}
                      {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
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l.59 \begin{flashcard}{不
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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l.62 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.63 \begin{flashcard}
                      {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.63 \begin{flashcard}{好
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.66 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.67 \begin{flashcard}
                      {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.67 \begin{flashcard}{有
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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l.70 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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l.71 \begin{flashcard}
                      {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

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l.71 \begin{flashcard}{听
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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l.74 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.75 \begin{flashcard}
                      {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.75 \begin{flashcard}{是
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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l.78 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.79 \begin{flashcard}
                      {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.79 \begin{flashcard}{明
                          天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.79 \begin{flashcard}{明天
                             }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
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l.82 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.83 \begin{flashcard}
                      {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.83 \begin{flashcard}{告
                          诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.83 \begin{flashcard}{告诉
                             }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.86 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.87 \begin{flashcard}
                      {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.87 \begin{flashcard}{我
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.90 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.91 \begin{flashcard}
                      {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.91 \begin{flashcard}{这
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.94 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.95 \begin{flashcard}
                      {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.95 \begin{flashcard}{工
                          作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.95 \begin{flashcard}{工作
                             }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.98 \end{flashcard}
                    
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.99 \begin{flashcard}
                      {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.99 \begin{flashcard}{了
                          }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.102 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
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l.103 \begin{flashcard}
                       {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.103 \begin{flashcard}{买
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.106 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

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Type  H <return>  for immediate help.
 ...                                              
                                                  
l.107 \begin{flashcard}
                       {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.107 \begin{flashcard}{在
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.110 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.111 \begin{flashcard}
                       {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.111 \begin{flashcard}{吃
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.114 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.115 \begin{flashcard}
                       {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.115 \begin{flashcard}{吃
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.118 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.119 \begin{flashcard}
                       {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.119 \begin{flashcard}{知
                           道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.119 \begin{flashcard}{知道
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.122 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.123 \begin{flashcard}
                       {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.123 \begin{flashcard}{买
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.126 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.127 \begin{flashcard}
                       {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.127 \begin{flashcard}{一
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.130 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.131 \begin{flashcard}
                       {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.131 \begin{flashcard}{卖
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.134 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.135 \begin{flashcard}
                       {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.135 \begin{flashcard}{我
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.138 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.139 \begin{flashcard}
                       {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.139 \begin{flashcard}{人
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.142 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.143 \begin{flashcard}
                       {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.143 \begin{flashcard}{现
                           在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.143 \begin{flashcard}{现在
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.146 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.147 \begin{flashcard}
                       {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.147 \begin{flashcard}{老
                           师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.147 \begin{flashcard}{老师
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.150 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.151 \begin{flashcard}
                       {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.151 \begin{flashcard}{来
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.154 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.155 \begin{flashcard}
                       {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.155 \begin{flashcard}{有
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.158 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.159 \begin{flashcard}
                       {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.159 \begin{flashcard}{你
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.162 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.163 \begin{flashcard}
                       {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.163 \begin{flashcard}{人
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.166 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.167 \begin{flashcard}
                       {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.167 \begin{flashcard}{听
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.170 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.171 \begin{flashcard}
                       {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.171 \begin{flashcard}{问
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.174 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.175 \begin{flashcard}
                       {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.175 \begin{flashcard}{孩
                           子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.175 \begin{flashcard}{孩子
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.178 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.179 \begin{flashcard}
                       {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.179 \begin{flashcard}{喜
                           欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.179 \begin{flashcard}{喜欢
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.182 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.183 \begin{flashcard}
                       {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.183 \begin{flashcard}{朋
                           友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.183 \begin{flashcard}{朋友
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.186 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.187 \begin{flashcard}
                       {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.187 \begin{flashcard}{了
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.190 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.191 \begin{flashcard}
                       {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.191 \begin{flashcard}{她
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.194 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.195 \begin{flashcard}
                       {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.195 \begin{flashcard}{他
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.198 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.199 \begin{flashcard}
                       {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.199 \begin{flashcard}{一
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.202 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.203 \begin{flashcard}
                       {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.203 \begin{flashcard}{去
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.206 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.207 \begin{flashcard}
                       {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.207 \begin{flashcard}{你
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.207 \begin{flashcard}{你们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.210 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.211 \begin{flashcard}
                       {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.211 \begin{flashcard}{朋
                           友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.211 \begin{flashcard}{朋友
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.214 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.215 \begin{flashcard}
                       {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.215 \begin{flashcard}{我
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.215 \begin{flashcard}{我们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.218 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.219 \begin{flashcard}
                       {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.219 \begin{flashcard}{问
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.222 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.223 \begin{flashcard}
                       {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.223 \begin{flashcard}{这
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.226 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.227 \begin{flashcard}
                       {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.227 \begin{flashcard}{一
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.230 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.231 \begin{flashcard}
                       {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.231 \begin{flashcard}{的
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.234 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.235 \begin{flashcard}
                       {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.235 \begin{flashcard}{明
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.235 \begin{flashcard}{明天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.238 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.239 \begin{flashcard}
                       {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.239 \begin{flashcard}{是
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.242 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.243 \begin{flashcard}
                       {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.243 \begin{flashcard}{听
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.246 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.247 \begin{flashcard}
                       {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.247 \begin{flashcard}{明
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.247 \begin{flashcard}{明天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.250 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.251 \begin{flashcard}
                       {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.251 \begin{flashcard}{学
                           校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.251 \begin{flashcard}{学校
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.254 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.255 \begin{flashcard}
                       {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.255 \begin{flashcard}{孩
                           子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.255 \begin{flashcard}{孩子
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.258 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.259 \begin{flashcard}
                       {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.259 \begin{flashcard}{想
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.262 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.263 \begin{flashcard}
                       {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.263 \begin{flashcard}{来
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.266 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.267 \begin{flashcard}
                       {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.267 \begin{flashcard}{学
                           校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.267 \begin{flashcard}{学校
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.270 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.271 \begin{flashcard}
                       {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.271 \begin{flashcard}{看
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.274 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.275 \begin{flashcard}
                       {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.275 \begin{flashcard}{想
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.278 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.279 \begin{flashcard}
                       {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.279 \begin{flashcard}{我
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.279 \begin{flashcard}{我们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.282 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.283 \begin{flashcard}
                       {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.283 \begin{flashcard}{时
                           间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.283 \begin{flashcard}{时间
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.286 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.287 \begin{flashcard}
                       {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.287 \begin{flashcard}{我
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.287 \begin{flashcard}{我们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.290 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.291 \begin{flashcard}
                       {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.291 \begin{flashcard}{以
                           前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.291 \begin{flashcard}{以前
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.294 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.295 \begin{flashcard}
                       {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.295 \begin{flashcard}{吃
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.298 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.299 \begin{flashcard}
                       {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.299 \begin{flashcard}{你
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.302 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.303 \begin{flashcard}
                       {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.303 \begin{flashcard}{工
                           作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.303 \begin{flashcard}{工作
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.306 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.307 \begin{flashcard}
                       {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.307 \begin{flashcard}{明
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.307 \begin{flashcard}{明天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.310 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.311 \begin{flashcard}
                       {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.311 \begin{flashcard}{昨
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.311 \begin{flashcard}{昨天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.314 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.315 \begin{flashcard}
                       {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.315 \begin{flashcard}{做
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.318 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.319 \begin{flashcard}
                       {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.319 \begin{flashcard}{看
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.322 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.323 \begin{flashcard}
                       {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.323 \begin{flashcard}{卖
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.326 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.327 \begin{flashcard}
                       {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.327 \begin{flashcard}{他
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.327 \begin{flashcard}{他们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.330 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.331 \begin{flashcard}
                       {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.331 \begin{flashcard}{知
                           道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.331 \begin{flashcard}{知道
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.334 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.335 \begin{flashcard}
                       {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.335 \begin{flashcard}{不
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.338 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.339 \begin{flashcard}
                       {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.339 \begin{flashcard}{的
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.342 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.343 \begin{flashcard}
                       {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.343 \begin{flashcard}{有
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.346 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.347 \begin{flashcard}
                       {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.347 \begin{flashcard}{不
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.350 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.351 \begin{flashcard}
                       {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.351 \begin{flashcard}{孩
                           子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.351 \begin{flashcard}{孩子
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.354 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.355 \begin{flashcard}
                       {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.355 \begin{flashcard}{在
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.358 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.359 \begin{flashcard}
                       {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.359 \begin{flashcard}{昨
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.359 \begin{flashcard}{昨天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.362 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.363 \begin{flashcard}
                       {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.363 \begin{flashcard}{他
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.363 \begin{flashcard}{他们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.366 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.367 \begin{flashcard}
                       {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.367 \begin{flashcard}{孩
                           子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.367 \begin{flashcard}{孩子
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.370 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.371 \begin{flashcard}
                       {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.371 \begin{flashcard}{不
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.374 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.375 \begin{flashcard}
                       {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.375 \begin{flashcard}{她
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.378 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.379 \begin{flashcard}
                       {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.379 \begin{flashcard}{的
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.382 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.383 \begin{flashcard}
                       {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.383 \begin{flashcard}{妈
                           妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.383 \begin{flashcard}{妈妈
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.386 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.387 \begin{flashcard}
                       {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.387 \begin{flashcard}{说
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.390 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.391 \begin{flashcard}
                       {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.391 \begin{flashcard}{吃
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.394 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.395 \begin{flashcard}
                       {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.395 \begin{flashcard}{喜
                           欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.395 \begin{flashcard}{喜欢
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.398 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.399 \begin{flashcard}
                       {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.399 \begin{flashcard}{听
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.402 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.403 \begin{flashcard}
                       {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.403 \begin{flashcard}{我
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.406 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.407 \begin{flashcard}
                       {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.407 \begin{flashcard}{这
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.410 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.411 \begin{flashcard}
                       {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.411 \begin{flashcard}{喝
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.414 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.415 \begin{flashcard}
                       {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.415 \begin{flashcard}{明
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.415 \begin{flashcard}{明天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.418 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.419 \begin{flashcard}
                       {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.419 \begin{flashcard}{学
                           习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.419 \begin{flashcard}{学习
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.422 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.423 \begin{flashcard}
                       {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.423 \begin{flashcard}{我
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.426 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.427 \begin{flashcard}
                       {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.427 \begin{flashcard}{学
                           校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.427 \begin{flashcard}{学校
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.430 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.431 \begin{flashcard}
                       {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.431 \begin{flashcard}{有
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.434 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.435 \begin{flashcard}
                       {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.435 \begin{flashcard}{听
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.438 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.439 \begin{flashcard}
                       {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.439 \begin{flashcard}{买
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.442 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.443 \begin{flashcard}
                       {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.443 \begin{flashcard}{告
                           诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.443 \begin{flashcard}{告诉
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.446 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.447 \begin{flashcard}
                       {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.447 \begin{flashcard}{来
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.450 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.451 \begin{flashcard}
                       {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.451 \begin{flashcard}{我
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.454 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.455 \begin{flashcard}
                       {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.455 \begin{flashcard}{昨
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.455 \begin{flashcard}{昨天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.458 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.459 \begin{flashcard}
                       {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.459 \begin{flashcard}{老
                           师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.459 \begin{flashcard}{老师
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.462 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.463 \begin{flashcard}
                       {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.463 \begin{flashcard}{老
                           师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.463 \begin{flashcard}{老师
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.466 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.467 \begin{flashcard}
                       {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.467 \begin{flashcard}{了
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.470 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.471 \begin{flashcard}
                       {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.471 \begin{flashcard}{学
                           校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.471 \begin{flashcard}{学校
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.474 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.475 \begin{flashcard}
                       {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.475 \begin{flashcard}{你
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.475 \begin{flashcard}{你们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.478 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.479 \begin{flashcard}
                       {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.479 \begin{flashcard}{他
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.482 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.483 \begin{flashcard}
                       {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.483 \begin{flashcard}{以
                           前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.483 \begin{flashcard}{以前
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.486 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.487 \begin{flashcard}
                       {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.487 \begin{flashcard}{是
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.490 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.491 \begin{flashcard}
                       {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.491 \begin{flashcard}{这
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.494 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.495 \begin{flashcard}
                       {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.495 \begin{flashcard}{学
                           生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.495 \begin{flashcard}{学生
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.498 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.499 \begin{flashcard}
                       {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.499 \begin{flashcard}{学
                           校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.499 \begin{flashcard}{学校
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.502 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.503 \begin{flashcard}
                       {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.503 \begin{flashcard}{你
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.506 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.507 \begin{flashcard}
                       {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.507 \begin{flashcard}{爸
                           爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.507 \begin{flashcard}{爸爸
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.510 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.511 \begin{flashcard}
                       {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.511 \begin{flashcard}{学
                           校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.511 \begin{flashcard}{学校
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.514 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.515 \begin{flashcard}
                       {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.515 \begin{flashcard}{你
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.515 \begin{flashcard}{你们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.518 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.519 \begin{flashcard}
                       {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.519 \begin{flashcard}{想
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.522 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.523 \begin{flashcard}
                       {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.523 \begin{flashcard}{昨
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.523 \begin{flashcard}{昨天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.526 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.527 \begin{flashcard}
                       {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.527 \begin{flashcard}{去
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.530 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.531 \begin{flashcard}
                       {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.531 \begin{flashcard}{一
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.534 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.535 \begin{flashcard}
                       {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.535 \begin{flashcard}{不
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.538 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.539 \begin{flashcard}
                       {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.539 \begin{flashcard}{吃
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.542 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.543 \begin{flashcard}
                       {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.543 \begin{flashcard}{学
                           习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.543 \begin{flashcard}{学习
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.546 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.547 \begin{flashcard}
                       {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.547 \begin{flashcard}{工
                           作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.547 \begin{flashcard}{工作
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.550 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.551 \begin{flashcard}
                       {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.551 \begin{flashcard}{有
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.554 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.555 \begin{flashcard}
                       {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.555 \begin{flashcard}{家
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.558 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.559 \begin{flashcard}
                       {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.559 \begin{flashcard}{买
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.562 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.563 \begin{flashcard}
                       {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.563 \begin{flashcard}{喝
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.566 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.567 \begin{flashcard}
                       {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.567 \begin{flashcard}{朋
                           友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.567 \begin{flashcard}{朋友
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.570 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.571 \begin{flashcard}
                       {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.571 \begin{flashcard}{看
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.574 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.575 \begin{flashcard}
                       {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.575 \begin{flashcard}{想
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.578 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.579 \begin{flashcard}
                       {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.579 \begin{flashcard}{时
                           间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.579 \begin{flashcard}{时间
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.582 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.583 \begin{flashcard}
                       {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.583 \begin{flashcard}{他
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.583 \begin{flashcard}{他们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.586 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.587 \begin{flashcard}
                       {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.587 \begin{flashcard}{她
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.590 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.591 \begin{flashcard}
                       {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.591 \begin{flashcard}{昨
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.591 \begin{flashcard}{昨天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.594 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.595 \begin{flashcard}
                       {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.595 \begin{flashcard}{朋
                           友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.595 \begin{flashcard}{朋友
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.598 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.599 \begin{flashcard}
                       {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.599 \begin{flashcard}{这
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.602 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.603 \begin{flashcard}
                       {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.603 \begin{flashcard}{想
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.606 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.607 \begin{flashcard}
                       {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.607 \begin{flashcard}{家
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.610 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.611 \begin{flashcard}
                       {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.611 \begin{flashcard}{人
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.614 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.615 \begin{flashcard}
                       {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.615 \begin{flashcard}{孩
                           子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.615 \begin{flashcard}{孩子
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.618 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.619 \begin{flashcard}
                       {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.619 \begin{flashcard}{喜
                           欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.619 \begin{flashcard}{喜欢
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.622 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.623 \begin{flashcard}
                       {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.623 \begin{flashcard}{听
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.626 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.627 \begin{flashcard}
                       {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.627 \begin{flashcard}{问
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.630 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.631 \begin{flashcard}
                       {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.631 \begin{flashcard}{喝
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.634 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.635 \begin{flashcard}
                       {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.635 \begin{flashcard}{她
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.638 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.639 \begin{flashcard}
                       {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.639 \begin{flashcard}{看
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.642 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.643 \begin{flashcard}
                       {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.643 \begin{flashcard}{朋
                           友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.643 \begin{flashcard}{朋友
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.646 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.647 \begin{flashcard}
                       {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.647 \begin{flashcard}{在
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.650 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.651 \begin{flashcard}
                       {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.651 \begin{flashcard}{吃
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.654 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.655 \begin{flashcard}
                       {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.655 \begin{flashcard}{家
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.658 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.659 \begin{flashcard}
                       {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.659 \begin{flashcard}{孩
                           子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.659 \begin{flashcard}{孩子
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.662 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.663 \begin{flashcard}
                       {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.663 \begin{flashcard}{我
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.663 \begin{flashcard}{我们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.666 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.667 \begin{flashcard}
                       {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.667 \begin{flashcard}{时
                           间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.667 \begin{flashcard}{时间
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.670 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.671 \begin{flashcard}
                       {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.671 \begin{flashcard}{吃
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.674 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.675 \begin{flashcard}
                       {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.675 \begin{flashcard}{去
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.678 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.679 \begin{flashcard}
                       {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.679 \begin{flashcard}{是
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.682 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.683 \begin{flashcard}
                       {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.683 \begin{flashcard}{想
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.686 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.687 \begin{flashcard}
                       {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.687 \begin{flashcard}{现
                           在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.687 \begin{flashcard}{现在
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.690 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.691 \begin{flashcard}
                       {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.691 \begin{flashcard}{做
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.694 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.695 \begin{flashcard}
                       {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.695 \begin{flashcard}{是
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.698 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.699 \begin{flashcard}
                       {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.699 \begin{flashcard}{喜
                           欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.699 \begin{flashcard}{喜欢
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.702 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.703 \begin{flashcard}
                       {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.703 \begin{flashcard}{她
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.706 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.707 \begin{flashcard}
                       {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.707 \begin{flashcard}{今
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.707 \begin{flashcard}{今天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.710 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.711 \begin{flashcard}
                       {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.711 \begin{flashcard}{做
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.714 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.715 \begin{flashcard}
                       {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.715 \begin{flashcard}{工
                           作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.715 \begin{flashcard}{工作
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.718 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.719 \begin{flashcard}
                       {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.719 \begin{flashcard}{吃
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.722 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.723 \begin{flashcard}
                       {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.723 \begin{flashcard}{听
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.726 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.727 \begin{flashcard}
                       {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.727 \begin{flashcard}{朋
                           友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.727 \begin{flashcard}{朋友
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.730 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.731 \begin{flashcard}
                       {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.731 \begin{flashcard}{我
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.734 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.735 \begin{flashcard}
                       {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.735 \begin{flashcard}{那
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.738 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.739 \begin{flashcard}
                       {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.739 \begin{flashcard}{喝
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.742 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.743 \begin{flashcard}
                       {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.743 \begin{flashcard}{你
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.743 \begin{flashcard}{你们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.746 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.747 \begin{flashcard}
                       {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.747 \begin{flashcard}{工
                           作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.747 \begin{flashcard}{工作
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.750 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.751 \begin{flashcard}
                       {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.751 \begin{flashcard}{今
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.751 \begin{flashcard}{今天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.754 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.755 \begin{flashcard}
                       {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.755 \begin{flashcard}{明
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.755 \begin{flashcard}{明天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.758 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.759 \begin{flashcard}
                       {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.759 \begin{flashcard}{今
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.759 \begin{flashcard}{今天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.762 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.763 \begin{flashcard}
                       {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.763 \begin{flashcard}{人
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.766 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.767 \begin{flashcard}
                       {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.767 \begin{flashcard}{明
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.767 \begin{flashcard}{明天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.770 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.771 \begin{flashcard}
                       {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.771 \begin{flashcard}{昨
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.771 \begin{flashcard}{昨天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.774 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.775 \begin{flashcard}
                       {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.775 \begin{flashcard}{我
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.778 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.779 \begin{flashcard}
                       {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.779 \begin{flashcard}{时
                           间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.779 \begin{flashcard}{时间
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.782 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.783 \begin{flashcard}
                       {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.783 \begin{flashcard}{昨
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.783 \begin{flashcard}{昨天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.786 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.787 \begin{flashcard}
                       {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.787 \begin{flashcard}{老
                           师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.787 \begin{flashcard}{老师
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.790 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.791 \begin{flashcard}
                       {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.791 \begin{flashcard}{想
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.794 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.795 \begin{flashcard}
                       {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.795 \begin{flashcard}{他
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.795 \begin{flashcard}{他们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.798 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.799 \begin{flashcard}
                       {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.799 \begin{flashcard}{他
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.802 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.803 \begin{flashcard}
                       {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.803 \begin{flashcard}{去
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.806 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.807 \begin{flashcard}
                       {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.807 \begin{flashcard}{那
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.810 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.811 \begin{flashcard}
                       {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.811 \begin{flashcard}{家
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.814 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.815 \begin{flashcard}
                       {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.815 \begin{flashcard}{一
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.818 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.819 \begin{flashcard}
                       {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.819 \begin{flashcard}{知
                           道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.819 \begin{flashcard}{知道
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.822 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.823 \begin{flashcard}
                       {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.823 \begin{flashcard}{这
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.826 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.827 \begin{flashcard}
                       {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.827 \begin{flashcard}{我
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.827 \begin{flashcard}{我们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.830 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.831 \begin{flashcard}
                       {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.831 \begin{flashcard}{爸
                           爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.831 \begin{flashcard}{爸爸
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.834 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.835 \begin{flashcard}
                       {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.835 \begin{flashcard}{今
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.835 \begin{flashcard}{今天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.838 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.839 \begin{flashcard}
                       {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.839 \begin{flashcard}{老
                           师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.839 \begin{flashcard}{老师
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.842 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.843 \begin{flashcard}
                       {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.843 \begin{flashcard}{学
                           生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.843 \begin{flashcard}{学生
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.846 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.847 \begin{flashcard}
                       {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.847 \begin{flashcard}{学
                           习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.847 \begin{flashcard}{学习
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.850 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.851 \begin{flashcard}
                       {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.851 \begin{flashcard}{问
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.854 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.855 \begin{flashcard}
                       {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.855 \begin{flashcard}{做
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.858 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.859 \begin{flashcard}
                       {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.859 \begin{flashcard}{了
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.862 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.863 \begin{flashcard}
                       {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.863 \begin{flashcard}{好
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.866 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.867 \begin{flashcard}
                       {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.867 \begin{flashcard}{现
                           在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.867 \begin{flashcard}{现在
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.870 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.871 \begin{flashcard}
                       {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.871 \begin{flashcard}{做
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.874 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.875 \begin{flashcard}
                       {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.875 \begin{flashcard}{喝
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.878 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.879 \begin{flashcard}
                       {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.879 \begin{flashcard}{喜
                           欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.879 \begin{flashcard}{喜欢
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.882 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.883 \begin{flashcard}
                       {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.883 \begin{flashcard}{老
                           师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.883 \begin{flashcard}{老师
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.886 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.887 \begin{flashcard}
                       {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.887 \begin{flashcard}{去
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.890 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.891 \begin{flashcard}
                       {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.891 \begin{flashcard}{这
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.894 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.895 \begin{flashcard}
                       {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.895 \begin{flashcard}{老
                           师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.895 \begin{flashcard}{老师
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.898 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.899 \begin{flashcard}
                       {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.899 \begin{flashcard}{那
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.902 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.903 \begin{flashcard}
                       {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.903 \begin{flashcard}{他
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.906 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.907 \begin{flashcard}
                       {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.907 \begin{flashcard}{他
                           们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.907 \begin{flashcard}{他们
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.910 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.911 \begin{flashcard}
                       {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.911 \begin{flashcard}{不
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.914 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.915 \begin{flashcard}
                       {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.915 \begin{flashcard}{告
                           诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.915 \begin{flashcard}{告诉
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.918 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.919 \begin{flashcard}
                       {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.919 \begin{flashcard}{学
                           生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.919 \begin{flashcard}{学生
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.922 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.923 \begin{flashcard}
                       {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.923 \begin{flashcard}{的
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.926 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.927 \begin{flashcard}
                       {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.927 \begin{flashcard}{学
                           习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.927 \begin{flashcard}{学习
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.930 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.931 \begin{flashcard}
                       {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.931 \begin{flashcard}{爸
                           爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.931 \begin{flashcard}{爸爸
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.934 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.935 \begin{flashcard}
                       {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.935 \begin{flashcard}{那
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.938 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.939 \begin{flashcard}
                       {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.939 \begin{flashcard}{看
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.942 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.943 \begin{flashcard}
                       {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.943 \begin{flashcard}{妈
                           妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.943 \begin{flashcard}{妈妈
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.946 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.947 \begin{flashcard}
                       {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.947 \begin{flashcard}{去
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.950 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.951 \begin{flashcard}
                       {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.951 \begin{flashcard}{有
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.954 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.955 \begin{flashcard}
                       {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.955 \begin{flashcard}{卖
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.958 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.959 \begin{flashcard}
                       {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.959 \begin{flashcard}{买
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.962 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.963 \begin{flashcard}
                       {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.963 \begin{flashcard}{看
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.966 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.967 \begin{flashcard}
                       {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.967 \begin{flashcard}{做
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.970 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.971 \begin{flashcard}
                       {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.971 \begin{flashcard}{有
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.974 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.975 \begin{flashcard}
                       {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.975 \begin{flashcard}{学
                           校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.975 \begin{flashcard}{学校
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.978 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.979 \begin{flashcard}
                       {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.979 \begin{flashcard}{今
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.979 \begin{flashcard}{今天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.982 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.983 \begin{flashcard}
                       {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.983 \begin{flashcard}{看
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.986 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.987 \begin{flashcard}
                       {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.987 \begin{flashcard}{明
                           天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.987 \begin{flashcard}{明天
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.990 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.991 \begin{flashcard}
                       {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.991 \begin{flashcard}{那
                           }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.994 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.995 \begin{flashcard}
                       {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.995 \begin{flashcard}{朋
                           友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.995 \begin{flashcard}{朋友
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.998 \end{flashcard}
                     
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.999 \begin{flashcard}
                       {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.999 \begin{flashcard}{告
                           诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.999 \begin{flashcard}{告诉
                              }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1002 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1003 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1003 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1006 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1007 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1007 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1007 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1010 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1011 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1011 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1014 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1015 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1015 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1018 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1019 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1019 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1022 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1023 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1023 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1023 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1026 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1027 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1027 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1030 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1031 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1031 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1034 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1035 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1035 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1038 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1039 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1039 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1042 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1043 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1043 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1043 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1046 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1047 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1047 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1050 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1051 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1051 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1054 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1055 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1055 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1058 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1059 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1059 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1059 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1062 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1063 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1063 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1066 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1067 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1067 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1070 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1071 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1071 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1074 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1075 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1075 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1078 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1079 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1079 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1082 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1083 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1083 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1086 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1087 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1087 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1087 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1090 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1091 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1091 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1094 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1095 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1095 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1098 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1099 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1099 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1099 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1102 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1103 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1103 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1103 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1106 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1107 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1107 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1110 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1111 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1111 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1114 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1115 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1115 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1118 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1119 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1119 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1119 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1122 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1123 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1123 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1123 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1126 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1127 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1127 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1130 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1131 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1131 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1134 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1135 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1135 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1138 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1139 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1139 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1142 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1143 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1143 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1143 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1146 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1147 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1147 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1150 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1151 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1151 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1151 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1154 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1155 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1155 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1155 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1158 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1159 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1159 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1159 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1162 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1163 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1163 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1163 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1166 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1167 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1167 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1167 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1170 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1171 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1171 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1171 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1174 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1175 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1175 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1175 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1178 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1179 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1179 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1182 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1183 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1183 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1183 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1186 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1187 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1187 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1187 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1190 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1191 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1191 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1194 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1195 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1195 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1198 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1199 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1199 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1202 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1203 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1203 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1203 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1206 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1207 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1207 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1210 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1211 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1211 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1214 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1215 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1215 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1218 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1219 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1219 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1219 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1222 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1223 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1223 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1223 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1226 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1227 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1227 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1230 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1231 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1231 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1234 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1235 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1235 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1235 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1238 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1239 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1239 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1242 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1243 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1243 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1243 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1246 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1247 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1247 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1247 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1250 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1251 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1251 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1254 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1255 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1255 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1258 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1259 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1259 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1262 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1263 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1263 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1266 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1267 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1267 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1270 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1271 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1271 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1274 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1275 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1275 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1275 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1278 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1279 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1279 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1279 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1282 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1283 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1283 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1286 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1287 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1287 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1287 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1290 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1291 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1291 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1294 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1295 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1295 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1295 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1298 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1299 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1299 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1302 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1303 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1303 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1303 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1306 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1307 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1307 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1310 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1311 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1311 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1314 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1315 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1315 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1315 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1318 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1319 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1319 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1322 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1323 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1323 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1326 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1327 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1327 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1327 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1330 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1331 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1331 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1331 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1334 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1335 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1335 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1338 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1339 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1339 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1339 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1342 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1343 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1343 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1343 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1346 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1347 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1347 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1350 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1351 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1351 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1351 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1354 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1355 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1355 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1358 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1359 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1359 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1359 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1362 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1363 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1363 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1366 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1367 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1367 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1367 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1370 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1371 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1371 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1371 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1374 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1375 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1375 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1375 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1378 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1379 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1379 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1382 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1383 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1383 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1386 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1387 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1387 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1390 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1391 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1391 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1391 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1394 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1395 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1395 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1395 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1398 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1399 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1399 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1399 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1402 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1403 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1403 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1406 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1407 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1407 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1407 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1410 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1411 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1411 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1414 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1415 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1415 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1418 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1419 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1419 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1422 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1423 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1423 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1423 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1426 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1427 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1427 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1430 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1431 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1431 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1434 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1435 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1435 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1438 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1439 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1439 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1442 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1443 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1443 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1443 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1446 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1447 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1447 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1447 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1450 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1451 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1451 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1454 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1455 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1455 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1458 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1459 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1459 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1462 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1463 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1463 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1463 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1466 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1467 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1467 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1470 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1471 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1471 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1471 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1474 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1475 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1475 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1475 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1478 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1479 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1479 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1482 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1483 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1483 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1486 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1487 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1487 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1487 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1490 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1491 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1491 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1494 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1495 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1495 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1498 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1499 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1499 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1499 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1502 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1503 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1503 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1506 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1507 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1507 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1510 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1511 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1511 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1514 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1515 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1515 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1518 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1519 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1519 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1522 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1523 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1523 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1523 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1526 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1527 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1527 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1527 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1530 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1531 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1531 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1531 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1534 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1535 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1535 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1538 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1539 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1539 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1539 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1542 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1543 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1543 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1546 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1547 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1547 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1547 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1550 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1551 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1551 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1551 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1554 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1555 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1555 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1555 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1558 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1559 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1559 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1562 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1563 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1563 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1566 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1567 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1567 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1570 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1571 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1571 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1571 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1574 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1575 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1575 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1578 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1579 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1579 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1579 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1582 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1583 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1583 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1583 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1586 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1587 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1587 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1590 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1591 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1591 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1594 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1595 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1595 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1598 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1599 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1599 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1602 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1603 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1603 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1603 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1606 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1607 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1607 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1610 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1611 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1611 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1614 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1615 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1615 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1615 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1618 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1619 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1619 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1619 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1622 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1623 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1623 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1626 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1627 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1627 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1630 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1631 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1631 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1631 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1634 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1635 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1635 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1638 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1639 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1639 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1642 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1643 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1643 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1646 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1647 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1647 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1650 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1651 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1651 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1651 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1654 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1655 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1655 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1658 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1659 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1659 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1659 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1662 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1663 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1663 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1666 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1667 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1667 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1670 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1671 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1671 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1671 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1674 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1675 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1675 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1678 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1679 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1679 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1679 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1682 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1683 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1683 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1686 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1687 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1687 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1690 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1691 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1691 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1691 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1694 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1695 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1695 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1695 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1698 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1699 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1699 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1699 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1702 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1703 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1703 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1706 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1707 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1707 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1710 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1711 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1711 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1714 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1715 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1715 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1715 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1718 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1719 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1719 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1719 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1722 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1723 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1723 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1723 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1726 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1727 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1727 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1727 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1730 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1731 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1731 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1734 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1735 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1735 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1735 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1738 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1739 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1739 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1739 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1742 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1743 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1743 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1746 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1747 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1747 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1747 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1750 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1751 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1751 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1754 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1755 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1755 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1755 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1758 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1759 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1759 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1759 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1762 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1763 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1763 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1763 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1766 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1767 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1767 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1767 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1770 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1771 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1771 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1771 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1774 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1775 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1775 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1778 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1779 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1779 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1782 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1783 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1783 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1786 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1787 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1787 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1790 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1791 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1791 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1791 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1794 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1795 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1795 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1798 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1799 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1799 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1802 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1803 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1803 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1803 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1806 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1807 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1807 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1810 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1811 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1811 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1811 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1814 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1815 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1815 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1815 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1818 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1819 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1819 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1819 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1822 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1823 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1823 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1826 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1827 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1827 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1830 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1831 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1831 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1834 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1835 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1835 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1838 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1839 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1839 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1842 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1843 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1843 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1846 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1847 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1847 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1850 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1851 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1851 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1854 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1855 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1855 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1855 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1858 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1859 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1859 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1862 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1863 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1863 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1866 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1867 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1867 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1867 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1870 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1871 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1871 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1874 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1875 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1875 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1875 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1878 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1879 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1879 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1882 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1883 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1883 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1883 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1886 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1887 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1887 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1890 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1891 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1891 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1891 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1894 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1895 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1895 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1898 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1899 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1899 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1899 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1902 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1903 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1903 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1906 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1907 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1907 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1907 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1910 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1911 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1911 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1914 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1915 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1915 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1915 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1918 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1919 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1919 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1922 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1923 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1923 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1926 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1927 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1927 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1930 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1931 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1931 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1931 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1934 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1935 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1935 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1935 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1938 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1939 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1939 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1939 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1942 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1943 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1943 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1943 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1946 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1947 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1947 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1947 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1950 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1951 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1951 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1954 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1955 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1955 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1955 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1958 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1959 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1959 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1962 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1963 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1963 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1966 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1967 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1967 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1970 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1971 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1971 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1974 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1975 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1975 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1975 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1978 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1979 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1979 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1979 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1982 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1983 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1983 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1983 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1986 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1987 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1987 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1990 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1991 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1991 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1991 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1994 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1995 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1995 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1995 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1998 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1999 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1999 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1999 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2002 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2003 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2003 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2006 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2007 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2007 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2010 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2011 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2011 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2011 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2014 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2015 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2015 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2018 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2019 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2019 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2019 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2022 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2023 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2023 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2026 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2027 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2027 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2030 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2031 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2031 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2034 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2035 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2035 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2038 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2039 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2039 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2042 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2043 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2043 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2043 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2046 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2047 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2047 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2050 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2051 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2051 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2054 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2055 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2055 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2055 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2058 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2059 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2059 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2059 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2062 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2063 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2063 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2063 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2066 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2067 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2067 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2070 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2071 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2071 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2071 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2074 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2075 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2075 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2075 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2078 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2079 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2079 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2082 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2083 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2083 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2083 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2086 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2087 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2087 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2090 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2091 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2091 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2094 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2095 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2095 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2095 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2098 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2099 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2099 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2102 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2103 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2103 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2103 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2106 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2107 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2107 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2110 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2111 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2111 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2111 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2114 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2115 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2115 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2115 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2118 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2119 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2119 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2119 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2122 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2123 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2123 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2126 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2127 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2127 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2130 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2131 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2131 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2134 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2135 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2135 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2138 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2139 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2139 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2139 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2142 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2143 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2143 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2146 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2147 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2147 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2150 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2151 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2151 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2151 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2154 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2155 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2155 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2155 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2158 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2159 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2159 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2162 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2163 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2163 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2166 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2167 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2167 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2170 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2171 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2171 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2174 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2175 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2175 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2175 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2178 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2179 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2179 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2179 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2182 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2183 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2183 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2186 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2187 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2187 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2190 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2191 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2191 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2194 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2195 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2195 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2195 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2198 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2199 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2199 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2199 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2202 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2203 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2203 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2206 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2207 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2207 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2210 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2211 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2211 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2211 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2214 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2215 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2215 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2215 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2218 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2219 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2219 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2222 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2223 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2223 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2226 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2227 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2227 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2227 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2230 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2231 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2231 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2234 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2235 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2235 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2235 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2238 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2239 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2239 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2242 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2243 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2243 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2243 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2246 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2247 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2247 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2250 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2251 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2251 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2251 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2254 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2255 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2255 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2258 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2259 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2259 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2259 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2262 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2263 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2263 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2266 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2267 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2267 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2270 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2271 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2271 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2274 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2275 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2275 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2275 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2278 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2279 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2279 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2279 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2282 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2283 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2283 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2286 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2287 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2287 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2290 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2291 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2291 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2291 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2294 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2295 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2295 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2298 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2299 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2299 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2299 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2302 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2303 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2303 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2303 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2306 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2307 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2307 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2307 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2310 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2311 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2311 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2314 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2315 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2315 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2318 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2319 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2319 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2322 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2323 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2323 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2323 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2326 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2327 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2327 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2327 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2330 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2331 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2331 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2331 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2334 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2335 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2335 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2335 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2338 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2339 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2339 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2342 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2343 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2343 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2343 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2346 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2347 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2347 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2350 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2351 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2351 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2354 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2355 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2355 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2355 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2358 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2359 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2359 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2359 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2362 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2363 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2363 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2363 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2366 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2367 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2367 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2367 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2370 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2371 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2371 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2374 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2375 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2375 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2378 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2379 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2379 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2382 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2383 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2383 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2386 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2387 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2387 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2387 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2390 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2391 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2391 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2391 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2394 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2395 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2395 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2395 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2398 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2399 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2399 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2402 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2403 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2403 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2406 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2407 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2407 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2407 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2410 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2411 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2411 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2411 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2414 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2415 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2415 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2418 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2419 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2419 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2422 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2423 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2423 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2426 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2427 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2427 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2430 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2431 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2431 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2434 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2435 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2435 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2435 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2438 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2439 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2439 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2442 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2443 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2443 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2446 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2447 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2447 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2450 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2451 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2451 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2454 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2455 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2455 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2455 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2458 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2459 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2459 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2462 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2463 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2463 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2463 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2466 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2467 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2467 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2470 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2471 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2471 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2471 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2474 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2475 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2475 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2478 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2479 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2479 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2479 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2482 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2483 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2483 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2483 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2486 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2487 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2487 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2487 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2490 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2491 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2491 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2491 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2494 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2495 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2495 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2498 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2499 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2499 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2499 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2502 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2503 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2503 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2506 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2507 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2507 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2510 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2511 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2511 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2514 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2515 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2515 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2515 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2518 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2519 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2519 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2522 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2523 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2523 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2523 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2526 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2527 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2527 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2527 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2530 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2531 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2531 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2531 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2534 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2535 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2535 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2538 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2539 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2539 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2539 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2542 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2543 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2543 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2546 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2547 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2547 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2550 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2551 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2551 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2551 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2554 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2555 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2555 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2558 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2559 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2559 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2562 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2563 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2563 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2563 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2566 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2567 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2567 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2570 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2571 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2571 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2574 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2575 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2575 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2578 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2579 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2579 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2582 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2583 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2583 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2586 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2587 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2587 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2590 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2591 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2591 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2591 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2594 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2595 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2595 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2598 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2599 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2599 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2602 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2603 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2603 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2603 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2606 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2607 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2607 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2610 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2611 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2611 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2614 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2615 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2615 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2615 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2618 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2619 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2619 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2619 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2622 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2623 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2623 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2626 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2627 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2627 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2627 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2630 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2631 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2631 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2631 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2634 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2635 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2635 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2638 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2639 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2639 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2639 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2642 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2643 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2643 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2643 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2646 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2647 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2647 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2650 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2651 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2651 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2654 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2655 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2655 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2658 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2659 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2659 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2659 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2662 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2663 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2663 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2666 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2667 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2667 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2670 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2671 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2671 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2674 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2675 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2675 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2678 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2679 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2679 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2679 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2682 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2683 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2683 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2683 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2686 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2687 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2687 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2690 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2691 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2691 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2694 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2695 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2695 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2695 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2698 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2699 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2699 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2702 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2703 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2703 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2703 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2706 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2707 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2707 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2710 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2711 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2711 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2714 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2715 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2715 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2718 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2719 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2719 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2722 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2723 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2723 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2726 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2727 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2727 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2727 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2730 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2731 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2731 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2734 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2735 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2735 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2738 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2739 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2739 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2739 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2742 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2743 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2743 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2746 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2747 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2747 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2750 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2751 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2751 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2751 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2754 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2755 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2755 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2758 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2759 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2759 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2759 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2762 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2763 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2763 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2763 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2766 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2767 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2767 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2770 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2771 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2771 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2771 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2774 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2775 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2775 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2778 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2779 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2779 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2779 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2782 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2783 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2783 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2783 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2786 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2787 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2787 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2790 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2791 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2791 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2791 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2794 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2795 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2795 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2798 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2799 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2799 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2799 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2802 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2803 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2803 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2806 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2807 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2807 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2807 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2810 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2811 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2811 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2814 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2815 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2815 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2818 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2819 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2819 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2819 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2822 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2823 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2823 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2823 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2826 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2827 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2827 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2827 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2830 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2831 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2831 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2831 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2834 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2835 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2835 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2838 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2839 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2839 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2842 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2843 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2843 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2846 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2847 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2847 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2850 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2851 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2851 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2854 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2855 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2855 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2858 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2859 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2859 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2862 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2863 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2863 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2866 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2867 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2867 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2870 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2871 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2871 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2874 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2875 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2875 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2875 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2878 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2879 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2879 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2879 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2882 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2883 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2883 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2886 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2887 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2887 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2890 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2891 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2891 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2891 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2894 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2895 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2895 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2895 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2898 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2899 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2899 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2899 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2902 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2903 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2903 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2906 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2907 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2907 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2907 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2910 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2911 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2911 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2911 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2914 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2915 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2915 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2915 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2918 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2919 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2919 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2922 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2923 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2923 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2926 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2927 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2927 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2930 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2931 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2931 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2934 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2935 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2935 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2938 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2939 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2939 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2942 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2943 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2943 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2946 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2947 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2947 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2947 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2950 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2951 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2951 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2951 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2954 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2955 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2955 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2958 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2959 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2959 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2962 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2963 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2963 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2963 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2966 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2967 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2967 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2967 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2970 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2971 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2971 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2974 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2975 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2975 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2975 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2978 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2979 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2979 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2979 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2982 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2983 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2983 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2986 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2987 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2987 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2987 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2990 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2991 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2991 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2994 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2995 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2995 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2995 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2998 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2999 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2999 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.2999 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3002 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3003 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3003 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3006 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3007 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3007 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3007 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3010 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3011 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3011 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3014 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3015 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3015 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3015 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3018 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3019 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3019 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3019 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3022 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3023 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3023 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3026 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3027 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3027 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3030 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3031 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3031 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3031 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3034 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3035 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3035 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3038 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3039 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3039 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3039 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3042 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3043 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3043 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3046 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3047 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3047 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3047 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3050 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3051 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3051 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3054 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3055 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3055 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3055 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3058 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3059 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3059 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3062 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3063 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3063 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3066 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3067 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3067 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3070 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3071 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3071 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3071 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3074 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3075 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3075 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3078 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3079 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3079 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3082 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3083 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3083 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3083 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3086 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3087 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3087 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3090 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3091 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3091 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3094 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3095 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3095 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3098 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3099 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3099 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3102 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3103 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3103 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3106 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3107 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3107 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3110 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3111 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3111 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3111 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3114 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3115 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3115 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3118 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3119 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3119 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3122 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3123 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3123 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3126 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3127 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3127 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3127 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3130 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3131 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3131 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3131 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3134 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3135 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3135 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3135 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3138 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3139 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3139 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3142 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3143 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3143 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3143 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3146 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3147 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3147 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3150 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3151 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3151 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3151 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3154 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3155 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3155 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3155 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3158 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3159 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3159 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3159 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3162 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3163 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3163 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3166 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3167 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3167 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3170 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3171 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3171 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3174 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3175 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3175 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3175 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3178 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3179 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3179 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3179 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3182 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3183 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3183 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3186 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3187 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3187 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3190 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3191 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3191 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3191 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3194 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3195 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3195 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3198 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3199 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3199 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3202 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3203 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3203 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3206 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3207 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3207 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3210 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3211 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3211 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3214 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3215 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3215 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3218 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3219 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3219 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3222 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3223 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3223 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3226 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3227 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3227 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3227 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3230 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3231 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3231 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3231 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3234 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3235 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3235 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3235 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3238 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3239 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3239 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3242 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3243 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3243 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3246 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3247 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3247 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3247 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3250 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3251 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3251 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3254 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3255 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3255 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3258 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3259 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3259 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3259 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3262 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3263 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3263 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3266 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3267 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3267 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3270 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3271 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3271 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3271 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3274 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3275 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3275 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3278 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3279 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3279 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3282 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3283 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3283 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3283 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3286 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3287 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3287 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3287 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3290 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3291 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3291 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3291 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3294 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3295 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3295 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3295 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3298 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3299 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3299 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3299 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3302 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3303 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3303 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3306 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3307 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3307 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3310 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3311 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3311 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3314 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3315 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3315 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3318 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3319 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3319 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3319 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3322 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3323 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3323 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3323 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3326 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3327 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3327 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3327 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3330 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3331 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3331 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3334 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3335 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3335 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3335 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3338 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3339 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3339 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3342 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3343 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3343 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3343 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3346 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3347 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3347 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3347 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3350 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3351 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3351 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3351 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3354 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3355 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3355 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3355 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3358 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3359 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3359 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3359 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3362 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3363 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3363 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3363 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3366 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3367 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3367 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3370 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3371 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3371 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3371 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3374 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3375 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3375 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3378 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3379 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3379 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3382 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3383 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3383 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3386 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3387 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3387 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3390 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3391 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3391 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3391 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3394 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3395 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3395 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3395 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3398 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3399 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3399 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3402 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3403 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3403 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3403 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3406 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3407 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3407 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3407 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3410 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3411 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3411 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3414 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3415 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3415 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3418 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3419 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3419 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3419 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3422 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3423 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3423 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3423 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3426 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3427 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3427 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3430 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3431 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3431 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3434 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3435 \begin{flashcard}
                        {老师}
? 

! LaTeX Error: Unicode character 老 (U+8001)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3435 \begin{flashcard}{老
                            师}
? 

! LaTeX Error: Unicode character 师 (U+5E08)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3435 \begin{flashcard}{老师
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3438 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3439 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3439 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3442 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3443 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3443 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3446 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3447 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3447 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3450 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3451 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3451 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3454 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3455 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3455 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3455 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3458 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3459 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3459 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3462 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3463 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3463 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3463 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3466 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3467 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3467 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3470 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3471 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3471 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3474 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3475 \begin{flashcard}
                        {看}
? 

! LaTeX Error: Unicode character 看 (U+770B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3475 \begin{flashcard}{看
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3478 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3479 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3479 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3482 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3483 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3483 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3483 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3486 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3487 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3487 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3490 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3491 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3491 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3494 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3495 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3495 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3498 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3499 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3499 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3499 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3502 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3503 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3503 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3503 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3506 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3507 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3507 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3510 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3511 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3511 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3514 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3515 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3515 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3518 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3519 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3519 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3519 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3522 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3523 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3523 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3526 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3527 \begin{flashcard}
                        {吃}
? 

! LaTeX Error: Unicode character 吃 (U+5403)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3527 \begin{flashcard}{吃
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3530 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3531 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3531 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3531 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3534 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3535 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3535 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3535 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3538 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3539 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3539 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3542 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3543 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3543 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3546 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3547 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3547 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3550 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3551 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3551 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3551 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3554 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3555 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3555 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3555 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3558 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3559 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3559 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3559 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3562 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3563 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3563 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3566 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3567 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3567 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3567 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3570 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3571 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3571 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3574 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3575 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3575 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3575 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3578 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3579 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3579 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3579 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3582 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3583 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3583 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3586 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3587 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3587 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3587 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3590 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3591 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3591 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3594 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3595 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3595 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3598 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3599 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3599 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3602 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3603 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3603 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3603 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3606 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3607 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3607 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3610 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3611 \begin{flashcard}
                        {家}
? 

! LaTeX Error: Unicode character 家 (U+5BB6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3611 \begin{flashcard}{家
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3614 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3615 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3615 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3618 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3619 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3619 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3622 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3623 \begin{flashcard}
                        {好}
? 

! LaTeX Error: Unicode character 好 (U+597D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3623 \begin{flashcard}{好
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3626 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3627 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3627 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3627 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3630 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3631 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3631 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3631 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3634 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3635 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3635 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3638 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3639 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3639 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3639 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3642 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3643 \begin{flashcard}
                        {这}
? 

! LaTeX Error: Unicode character 这 (U+8FD9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3643 \begin{flashcard}{这
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3646 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3647 \begin{flashcard}
                        {朋友}
? 

! LaTeX Error: Unicode character 朋 (U+670B)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3647 \begin{flashcard}{朋
                            友}
? 

! LaTeX Error: Unicode character 友 (U+53CB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3647 \begin{flashcard}{朋友
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3650 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3651 \begin{flashcard}
                        {买}
? 

! LaTeX Error: Unicode character 买 (U+4E70)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3651 \begin{flashcard}{买
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3654 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3655 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3655 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3658 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3659 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3659 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3662 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3663 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3663 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3663 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3666 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3667 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3667 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3670 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3671 \begin{flashcard}
                        {明天}
? 

! LaTeX Error: Unicode character 明 (U+660E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3671 \begin{flashcard}{明
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3671 \begin{flashcard}{明天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3674 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3675 \begin{flashcard}
                        {做}
? 

! LaTeX Error: Unicode character 做 (U+505A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3675 \begin{flashcard}{做
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3678 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3679 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3679 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3682 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3683 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3683 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3683 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3686 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3687 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3687 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3690 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3691 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3691 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3691 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3694 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3695 \begin{flashcard}
                        {告诉}
? 

! LaTeX Error: Unicode character 告 (U+544A)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3695 \begin{flashcard}{告
                            诉}
? 

! LaTeX Error: Unicode character 诉 (U+8BC9)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3695 \begin{flashcard}{告诉
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3698 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3699 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3699 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3699 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3702 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3703 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3703 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3703 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3706 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3707 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3707 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3707 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3710 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3711 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3711 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3711 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3714 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3715 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3715 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3718 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3719 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3719 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3719 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3722 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3723 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3723 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3723 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3726 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3727 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3727 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3727 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3730 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3731 \begin{flashcard}
                        {的}
? 

! LaTeX Error: Unicode character 的 (U+7684)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3731 \begin{flashcard}{的
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3734 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3735 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3735 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3738 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3739 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3739 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3739 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3742 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3743 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3743 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3743 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3746 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3747 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3747 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3747 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3750 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3751 \begin{flashcard}
                        {喜欢}
? 

! LaTeX Error: Unicode character 喜 (U+559C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3751 \begin{flashcard}{喜
                            欢}
? 

! LaTeX Error: Unicode character 欢 (U+6B22)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3751 \begin{flashcard}{喜欢
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3754 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3755 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3755 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3755 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3758 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3759 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3759 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3762 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3763 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3763 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3766 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3767 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3767 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3767 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3770 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3771 \begin{flashcard}
                        {在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3771 \begin{flashcard}{在
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3774 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3775 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3775 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3778 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3779 \begin{flashcard}
                        {听}
? 

! LaTeX Error: Unicode character 听 (U+542C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3779 \begin{flashcard}{听
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3782 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3783 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3783 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3783 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3786 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3787 \begin{flashcard}
                        {想}
? 

! LaTeX Error: Unicode character 想 (U+60F3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3787 \begin{flashcard}{想
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3790 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3791 \begin{flashcard}
                        {不}
? 

! LaTeX Error: Unicode character 不 (U+4E0D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3791 \begin{flashcard}{不
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3794 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3795 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3795 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3798 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3799 \begin{flashcard}
                        {了}
? 

! LaTeX Error: Unicode character 了 (U+4E86)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3799 \begin{flashcard}{了
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3802 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3803 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3803 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3806 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3807 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3807 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3807 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3810 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3811 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3811 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3814 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3815 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3815 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3815 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3818 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3819 \begin{flashcard}
                        {一}
? 

! LaTeX Error: Unicode character 一 (U+4E00)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3819 \begin{flashcard}{一
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3822 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3823 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3823 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3823 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3826 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3827 \begin{flashcard}
                        {学生}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3827 \begin{flashcard}{学
                            生}
? 

! LaTeX Error: Unicode character 生 (U+751F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3827 \begin{flashcard}{学生
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3830 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3831 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3831 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3831 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3834 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3835 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3835 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3838 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3839 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3839 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3842 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3843 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3843 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3843 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3846 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3847 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3847 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3847 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3850 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3851 \begin{flashcard}
                        {以前}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3851 \begin{flashcard}{以
                            前}
? 

! LaTeX Error: Unicode character 前 (U+524D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3851 \begin{flashcard}{以前
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3854 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3855 \begin{flashcard}
                        {喝}
? 

! LaTeX Error: Unicode character 喝 (U+559D)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3855 \begin{flashcard}{喝
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3858 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3859 \begin{flashcard}
                        {人}
? 

! LaTeX Error: Unicode character 人 (U+4EBA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3859 \begin{flashcard}{人
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3862 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3863 \begin{flashcard}
                        {卖}
? 

! LaTeX Error: Unicode character 卖 (U+5356)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3863 \begin{flashcard}{卖
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3866 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3867 \begin{flashcard}
                        {时间}
? 

! LaTeX Error: Unicode character 时 (U+65F6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3867 \begin{flashcard}{时
                            间}
? 

! LaTeX Error: Unicode character 间 (U+95F4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3867 \begin{flashcard}{时间
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3870 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3871 \begin{flashcard}
                        {来}
? 

! LaTeX Error: Unicode character 来 (U+6765)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3871 \begin{flashcard}{来
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3874 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3875 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3875 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3875 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3878 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3879 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3879 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3879 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3882 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3883 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3883 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3883 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3886 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3887 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3887 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3890 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3891 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3891 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3891 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3894 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3895 \begin{flashcard}
                        {我}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3895 \begin{flashcard}{我
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3898 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3899 \begin{flashcard}
                        {今天}
? 

! LaTeX Error: Unicode character 今 (U+4ECA)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3899 \begin{flashcard}{今
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3899 \begin{flashcard}{今天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3902 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3903 \begin{flashcard}
                        {说}
? 

! LaTeX Error: Unicode character 说 (U+8BF4)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3903 \begin{flashcard}{说
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3906 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3907 \begin{flashcard}
                        {爸爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3907 \begin{flashcard}{爸
                            爸}
? 

! LaTeX Error: Unicode character 爸 (U+7238)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3907 \begin{flashcard}{爸爸
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3910 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3911 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3911 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3911 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3914 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3915 \begin{flashcard}
                        {去}
? 

! LaTeX Error: Unicode character 去 (U+53BB)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3915 \begin{flashcard}{去
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3918 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3919 \begin{flashcard}
                        {他们}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3919 \begin{flashcard}{他
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3919 \begin{flashcard}{他们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3922 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3923 \begin{flashcard}
                        {你}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3923 \begin{flashcard}{你
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3926 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3927 \begin{flashcard}
                        {有}
? 

! LaTeX Error: Unicode character 有 (U+6709)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3927 \begin{flashcard}{有
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3930 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3931 \begin{flashcard}
                        {知道}
? 

! LaTeX Error: Unicode character 知 (U+77E5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3931 \begin{flashcard}{知
                            道}
? 

! LaTeX Error: Unicode character 道 (U+9053)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3931 \begin{flashcard}{知道
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3934 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3935 \begin{flashcard}
                        {昨天}
? 

! LaTeX Error: Unicode character 昨 (U+6628)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3935 \begin{flashcard}{昨
                            天}
? 

! LaTeX Error: Unicode character 天 (U+5929)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3935 \begin{flashcard}{昨天
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3938 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3939 \begin{flashcard}
                        {他}
? 

! LaTeX Error: Unicode character 他 (U+4ED6)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3939 \begin{flashcard}{他
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3942 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3943 \begin{flashcard}
                        {她}
? 

! LaTeX Error: Unicode character 她 (U+5979)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3943 \begin{flashcard}{她
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3946 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3947 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3947 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3950 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3951 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3951 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3954 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3955 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3955 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3955 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3958 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3959 \begin{flashcard}
                        {现在}
? 

! LaTeX Error: Unicode character 现 (U+73B0)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3959 \begin{flashcard}{现
                            在}
? 

! LaTeX Error: Unicode character 在 (U+5728)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3959 \begin{flashcard}{现在
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3962 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3963 \begin{flashcard}
                        {以后}
? 

! LaTeX Error: Unicode character 以 (U+4EE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3963 \begin{flashcard}{以
                            后}
? 

! LaTeX Error: Unicode character 后 (U+540E)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3963 \begin{flashcard}{以后
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3966 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3967 \begin{flashcard}
                        {孩子}
? 

! LaTeX Error: Unicode character 孩 (U+5B69)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3967 \begin{flashcard}{孩
                            子}
? 

! LaTeX Error: Unicode character 子 (U+5B50)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3967 \begin{flashcard}{孩子
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3970 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3971 \begin{flashcard}
                        {那}
? 

! LaTeX Error: Unicode character 那 (U+90A3)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3971 \begin{flashcard}{那
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3974 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3975 \begin{flashcard}
                        {我们}
? 

! LaTeX Error: Unicode character 我 (U+6211)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3975 \begin{flashcard}{我
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3975 \begin{flashcard}{我们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3978 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3979 \begin{flashcard}
                        {学校}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3979 \begin{flashcard}{学
                            校}
? 

! LaTeX Error: Unicode character 校 (U+6821)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3979 \begin{flashcard}{学校
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3982 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3983 \begin{flashcard}
                        {问}
? 

! LaTeX Error: Unicode character 问 (U+95EE)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3983 \begin{flashcard}{问
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3986 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3987 \begin{flashcard}
                        {妈妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3987 \begin{flashcard}{妈
                            妈}
? 

! LaTeX Error: Unicode character 妈 (U+5988)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3987 \begin{flashcard}{妈妈
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3990 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3991 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3991 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3994 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3995 \begin{flashcard}
                        {学习}
? 

! LaTeX Error: Unicode character 学 (U+5B66)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3995 \begin{flashcard}{学
                            习}
? 

! LaTeX Error: Unicode character 习 (U+4E60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3995 \begin{flashcard}{学习
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3998 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3999 \begin{flashcard}
                        {工作}
? 

! LaTeX Error: Unicode character 工 (U+5DE5)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3999 \begin{flashcard}{工
                            作}
? 

! LaTeX Error: Unicode character 作 (U+4F5C)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.3999 \begin{flashcard}{工作
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.4002 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.4003 \begin{flashcard}
                        {是}
? 

! LaTeX Error: Unicode character 是 (U+662F)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.4003 \begin{flashcard}{是
                            }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.4006 \end{flashcard}
                      
? 

! LaTeX Error: Environment flashcard undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.4007 \begin{flashcard}
                        {你们}
? 

! LaTeX Error: Unicode character 你 (U+4F60)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.4007 \begin{flashcard}{你
                            们}
? 

! LaTeX Error: Unicode character 们 (U+4EEC)
               not set up for use with LaTeX.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.4007 \begin{flashcard}{你们
                               }
? 

! LaTeX Error: \begin{document} ended by \end{flashcard}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.4010 \end{flashcard}
                      
? 
[1

{/var/lib/texmf/fonts/map/pdftex/updmap/pdftex.map}] [2] [3] [4] [5] [6]
[7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21]
[22] (./flashcards.aux) ) 
Here is how much of TeX's memory you used:
 2164 strings out of 476866
 37189 string characters out of 5811216
 1973330 words of memory out of 5000000
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 513200 words of font info for 35 fonts, out of 8000000 for 9000
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Output written on flashcards.pdf (22 pages, 68991 bytes).
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