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(2)Drink water and milk most often. Everyone knows that water is important. Besides that，kids need plenty of calcium(钙)to grow strong bones， and milk is rich in it. Every day，you should drink at least three cups of milk，when you are 9 years old or older. You should also try to have less sugary drinks，like soda and coca. They include a lot of sugar. Sugar only includes calories(热量)，not important nutrition.
(3)Listen to your body. When you are eating，notice how your body feels. When your stomach feels comfortably full，stop eating. Eating too much makes you feel uncomfortable. If you do it too often，it can make you unhealthy and fat.
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