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People spend a lot of their spare time playing football, basketball, tennis and many other games (or sports). Some people play because they want to. A few people are paid for the sports they play. These people are called professional sportsmen. They may be such sportsmen for only a few years, but during that time the best one can make a lot of money.
For example, a football player in England earns more than 50,000 pounds in a year. Of course, only a few sportsmen can make as much money as that.
It is only possible to understand sports better if you know golf, tennis and motor-racing are among those which can bring a lot of money. Perhaps the most surprising thing about sportsmen and money is this: the stars can earn more money from advertising than from sport.
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