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die out pay attention to come into being
get dressed in peace in danger
protect…from be concerned about have an effect on
wake up turn around burst into laughter
in relief a certain number of without mercy
according to know for sure endangered species
as a result deal with have … in common
make up after all watch over
be filled with with the help of compare …to/with ….
According to at that time from then on
Share … with … as well as be crazy about
Provide … With in a way
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