美国原版教材2017-有四节科学课后续请等

我们网上下载的加州教材都是针对非第一语言为英语的，我这里上传的美国本土一直以来英语都是第一语言的。
今天上传的是科学共4节课，等级为G1-G4.含我们的大气层2节课，热带雨林2节课
The atmosphere is the air around us. The atmosphere is the airwe breathe. The air goes on for some miles above the earth’ssurface.
Rainforests are special places! They are warm all year. It rains alot there. It is humid. This means it is wet and hot. There are alot of plants and animals in the rainforest!https://pan.baidu.com/s/1brdKS4v