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86.-Tom, why are you late again?
- Sorry, manager. My car ____ on my way to the office.
A.broke down B.broke up C.broke out D.broke into
87.You may do ____ you want on condition that you stay in the room .
A.whatever B.which C.that D.all what
88.You've just missed your ____, and you will have to wait for the next round.
A.chance B.part C.time D.turn
89.Although they are very busy, our parents still ____ a lot of time to us.
A.devote B.offer C.spend D.provide
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