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She was accused of sheltering a murderer. She wad sheltered by the USA. In the rain people were sheltering in the doorways of shops.
16. fresh adj. 1) new and different (only before a noun ); 2) recently picked, caught, produced and therefore in good condition (used of food); 3) clean, cool and pleasant They buy fresh meat.
This kind of fish lives in fresh water.
She is fresh from university.
She is quite fresh to office work.
17. percent n. parts for each 100 The bank has increased its interest rate by one percent. Over ninety percent of the islanders here are illiterate.
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