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1. give in：屈服，让步
The goverment had no option but to give in to the pressure form the public opinion.政府别无选择，只能屈服于舆论的压力。
替换短语：succumb to：屈服于……
The goverment had no option but to succumb to the pressure form the public opinion.政府别无选择，只能屈服于舆论的压力。
2. give up：放弃
You'd better give up the impossible plan as soon as possible.你最好尽快放弃那个不可能计划。
3. give room：腾出地方
Why don't we just cast away the old closet and give room to the sofa?我们为何不把旧柜子丢掉，腾出空间放那张沙发？
混淆短语；do one's room：收拾房间
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