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Happiness is important for everyone. Most people want to be happy but few know how to find happiness. Money and success don't bring lasting happiness. Happiness depends on ourselves. In other words，we make our own happiness.
Some people believe that if they are wealthy，they will be able to do anything they want，which means happiness. On the other hand，some people believe that holding a high position in the government is happiness. In this way，you have not only money，but also many other things which can't be bought by money. However，other people believe that having lots of money is not happiness，nor is holding a high position in the government. These people value(重视)their beliefs，or their intelligence，or their health. They think these can make them happy.
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