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13. ________ is often the case, we have worked out the production plan. (04江苏)
A. Which B. When C. What D. As
14. George Orwell, ______ was Eric Arthur, wrote many political novels and essays. (04北京)
A the real name B what his real name
C his real name D whose real name
15. Helen was much kinder to her youngest son than to the others, ______, of course, made the others envy him. (04天津)
A who B that C what D which
16. I work in a business ________ almost everyone is waiting for a great chance. (04湖南)
A. how B. which C. where D. that
17. There was time I hated to go to school. (04湖北)
A.a; that B.a; when C.the; that D.the; when
18. There are two buildings, stands nearly a hundred feet high. (04湖北)
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