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18.When did China make a formal agreement with its major trading partners ?
A.On Dec. 11.B.On Sep . 17.C.On Monday .
19.What does the second piece of news tell us ?
A.Fourteen winners received peace prize .
B.Forty people received their awards for the same reason .
C.Fourteen winners in different fields won the Nobel Prizes .
20.What did we know from the third piece of news ?
A.The Dead Sea has stopped sinking .
B.The Dead Sea is lower than before .
C.The Dead Sea has sunk 6.35 centimeters .
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