http://s4/bmiddle/68fd3f02h9ad1f45b2363&690
                                        津津有味

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                     有奖问答环节"我来回答"                  刘博士在讲课

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                         课后家长迟迟不肯离去

         http://s14/bmiddle/68fd3f02h9ad21ce9304d&690
                    课后刘博士被家长团团围住

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                          认真听课的家长

 
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工                           坐无虚席