请根据课本More practice部分的文章内容和所给的五个要点提示,对该文章进行复述。
1. What doesn’t air have?
2. When do we feel air on our face?
3. How do a kite and a plane stay in the air?
4. How does a balloon rise in the air?
5. Why do we need air?

Air doesn’t have...________________________________________________________

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