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. cultural relics/sites 文化古迹
9. give in (to sb) 让步，屈服 give up 放弃 give out 发放; 发出(光;热;气等);用尽
give off 散发(光;热;气) give away 抛弃;捐赠 give over 转交，移交=hand over
10. in ruins 废墟 bring…to ruin 使…变成废墟=ruin sth come/go to ruin=fall into ruin 变成废墟
11. lie in pieces on the ground 成为碎片撒了一地
12. We will do everything/all/what we can to save our city.
13. It seems (to me) that…; It seems as if …; There seems to be… S. seems/seemed to...
14. bring…back to life 使…复苏， 使…苏醒 come back to life 复苏; 苏醒
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