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42) The army organized the rescue workers to dig out those who were trapped and to bury the dead. (定语从句) 部队组织救援人员将受困的人们挖出来，将死者掩埋。
43) All hope was not lost. = Not all hope was lost.(部分否定) 不是所有的希望都破灭了。
44) None of us were allowed to go there.(全部否定) 我们全都不许去那里。
45) He rescued the man from drowning. 他救了一男子使之免遭溺毙。
46) An earthquake left the whole city in ruins. 地震过后，全城到处是残垣断壁。
47) I feel highly honoured by your trust. 得到你的信任，我感到非常荣幸。
48) Professor Yu organized his thoughts before giving the speech. 于教授在演讲之前组织了一下思路。
49) Many people took shelter from the rain in the department store. 许多人在百货公司里避雨。
50) It seemed that the world was at an end as the earthquake destroyed nearly everything.世界似乎到了末日，因为地震几乎毁了一切。
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