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14. organize v. to plan and arrange an event; to arrange things in a sensible order We'll organize an oral English contest. The story is very well organized.
They organized the truckers into a union.
15. shelter 1) n. a) [U] protection, especially from bad weather or danger b) a building that protects you from weather or danger. 2) vt. to protect someone or sth from bad weather or danger; vi. to stay in a place in order to be protected from bad weather or danger
The umbrella is a poor shelter from heavy rain.
Their immediate need is for food, clothing and shelter.
The wall sheltered us from the wind.
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