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impression n. 印象
(1) impression (on sb.) (给某人)印象
His speech made a strong impression on his audience.
(2) impression (of sth.) (对某事物)印象；想法
That's my first impression of the new college.
(3) impress sb. with sth. 给予某人深刻印象 = impress sth. on sb. 使某人铭记
The teacher impressed on his students the importance of speaking. = The teacher impressed his students with the importance of speaking.
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