1. 任务型阅读

    Air，I can't see it．I can't touch it．But I 1.can live without it．This is air．Air 2.are very important．It is all around US when we walk and play．It is all around US when we sit down3. or sleep．We need 4.airs ．

All living things5. needs air．We can live without food or water for a few days，but we cannot live without air for even a few minutes．When we 6.are work or run．we need more air．When we are asleep，we need less air．

1. （1） 帮助Sam检查一下作文吧，圈出错误的地方并在下面改正。

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3. （2） 判断对错：I can see and touch air．
5. （3） 判断对错：Air is not important to us．
7. （4） 判断对错：We can have no food or water for a few days，but we can't have no air．
9. （5） 判断对错：When we sleep，we don't need air．
11. （6） 判断对错：When we walk and play，we need air．