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9. Obama _____ giving lecture to young men _____ invited to meeting at times.
A. preferred; to being B. preferred; rather than
C. preferred; than being D. preferred to; to being
10. I walked up to the top of the hill with my friend, we enjoyed a splendid view of the lake.
A. which B. where C. who D. that
11 .Planning so far ahead no sense-so many things will have changed by next year.
A. made B .is making C .makes D. has made
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