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6.The enemy fell into a (圈套)and we defeated them.
答案：trap
7.The soldiers built many (避难所)for those who lost their homes.
答案：shelters
8.The old couple were at last (营救，援救)by the local people.
答案：rescued
9.Mr.Smith has been (掩埋)in his research for more than 3 hours.
答案：buried
10.They were (震惊)at the news that he had cheated so much money.
答案：shocked
Ⅱ.选词填空
dig out;injure;right away;think little of;in ruins;blow away;at an end;the number of
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