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Television， it is often said， keeps one informed about current events and the latest developments in science and politics. The most distant countries and the strangest customs are brought right into one's sitting room. It could be argued that the radio performs this service as well； but on television everything is much more living， much more real. Yet here again there is a danger. The television screen itself has a terrible， almost physical charm for us. We get so used to looking at the movements on it ，so dependent on its pictures， that it begins to control our lives. People are often heard to say that their television sets have broken down and that they have suddenly found that they have far more time to do things and the they have actually begin to talk to each other again. It makes one think， doesn't it？
There are many other arguments for and against television. We must realize that television itself is neither good nor bad. It is the uses that it is put to tha
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