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5.The man ______ Mary was so tall that she could hardly see the show.
A．in front of B．in the front of
C．at the back of D．at the beginning of
6. The garden _______while the Greens were away from home.
A. took good care of B．was taken good care
C．was taken good care of D．was taking good care
7. ——Have you finished _____the book?
——Not yet. I’ll try _____it to you before Friday.
A．reading, returning B．to read, to return
C．reading, to return D. to read, returning
8. Many people watched the boys ______ the mountain at that time.
A．climb B．climbing C．to climb D．climbed
9. India had the second ______population in the world.
A．largest B．larger C．most D．smallest
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