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  Air is all around us. It's around us when we talk and play. From the time we were born, air is around us on every side. When we sit down, it's around us. When we go to bed, air is also around us. We live in air.

  All living things need air. Living things can't live without air. We can go without food or water for a few days, but we can't live for more than a few minutes without air. We take in air. When we are working or running, we need more air. When we are asleep(入睡), we need less air.

  We live in air, but we can't see it. We can only feel(感觉,感受)it. We can feel it when it's moving. Moving air is called wind. How can you make air move? Here is one way. Hold an open book in your hands in front of your face. Close it quickly. What can you feel? What you feel is the air.

根据短文内容,判断正(T)(F)

(1)We live in air.

(  )

(2)All living things need air.

(  )

(3)We need more air when we are asleep than we are running.

(  )

(4)We can't see or feel air.

(  )

(5)In fact, wind is moving air.

(  )

答案:T;T;F;F;T
解析:

(1)见文中第一段最后一句。

(2)见文中第二段首句。

(3)见文中第二段最后两句。

(4)我们看不到空气,但我们能感受到。见文中第三段前两句。

(5)根据Moving air is called wind.“移动的空气被叫做风。”可推出。


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