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Then the effect of these illnesses is not usually very bad.这些病的后果并非不好。
If we get them when we are older, it can be much worse for us.如果大一点的时候才得这些病,对我们更不好。
Throughout history, we have fought against diseases and illnesses and many will have been eradicated from most countries by the end of this century.有史以来,我们已经同疾病做了许多斗争,许多疾病也将在本世纪末在许多国家完全被消除了。
But new ones seem to come along to challenge us, or perhaps these new ones were always there but we did not identify them.但是似乎又有新的疾病袭来,向人们提出挑战。也许,这些新的疾病一直都存在,只是我们没有发现。