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Opportunities don't come often. They come every once in a while. Very often, they come quietly and go by without being noticed. Therefore ,it is advisable that you should value and treat them with care. When an opportunity comes, it brings a promise but never realizes it on its own. If you want to achieve something or intend to fulfill one of your ambitious, you must work hard, make efforts and get prepared. Otherwise, you will take no advantage of opportunities when they come to visit you. The difference between a man who succeeds and one who does not lies only in the way each treats opportunities. The successful person always makes adequate preparations to meet opportunities as they duly arrive. The unsuccessful person, on the other hand, works little and just waits to see them pass by.
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