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A long time ago，in a small house in Scotland，two friends lived together.Their names were John and Bobby.John and Bobby were not rich，but they were happy.They had a warm fire when it was cold outside.They had good food to eat when they were hungry.They were never lonely because they had each other.
John and Bobby liked to take long walks together.After their walk，John usually cooked dinner.John and Bobby ate dinner and then sat in front of the fire.They had a simple but good life.
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