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7.There are many people who want to earn the money form only cutting down trees. So more and more trees are cut by them. But kind people want to protect the environment and make the air clean. So they plant trees as many as they can.
有许多想要通过砍伐树木来挣钱的人。那样越来越多树被他们砍断。但是善良人们想要保卫环境和使空气变得干净。因此他们尽最大努力的植树。
8.All these actions show that people should pay more attention to the environment. We want to make it better, don’t we? So we must plant more trees to protect the environment.
所有这些行动展示人们将去更多的注意环境。我们希望变得更好，不是吗?所以我们必须植更多的树来保护环境。
9.In China, Planting Trees Day is on March 12. This special day began in 1979. On that day, people can plant many trees.
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