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most of the night in a factory to pay for his education . Of course he was tired in the 52 and sometimes could hardly keep 53 . Miss Smith soon arranged for him to have a
54 and he was able to give up his 55 and concentrate (集中精力) on his studies .
36.A.distance B.silence C.pleasure D.delight
37.A.failB.teach C.beat D.tell
38.A.lesson B.thing C.trouble D.boy
39.A.homework B.housework C.cleaning D.washing
40.A.some B.plenty C.any D.lots
41.A.even B.if C.though D.when
42.A.Long B.Until C.Ever D.Never
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