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The news of his death was a shock to us.
The traffic accident sent him into a state of shock.
They were shocked by her rudeness. We were shocked by his sudden death.
12. rescue v. to save someone or sth from harm or danger He rescued three children from the burning building.
The life boat was sent out to rescue the sailors from the sinking ship.
The boy was rescued after hours at sea.
13. disaster n. [C,U] a sudden event causes great loss or harm We were all shocked by the disaster. The earthquake is one of the worst natural disasters the country has ever suffered. People began to wonder how long the disaster would last.
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