互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本，课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒The fairy leaned toward her and whispered in her ear. Then the fairy disappeared.
As the little girl grew up， there was no one in the land as happy as she. Everyone asked her secret of happiness .She would only smile and answer， “The secret of my happiness is that I listened to a good fairy when I was a little girl.”
When she was very old and on her deathbed， the neighbors all gathered around her， that her unbelievable secret of happiness would die with her. “Tell us， please，” they begged， “Tell us what the good fairy said.” The lovely old woman simply smiled and said， “She told me that everyone， no matter how secure they seemed， no matter how old or young， how rich or poor， had need of me.”
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