题目内容
Air is all around us. At the time we are born,air is around us on every s1 We live in air. All living things n2 air. Living things cannot live w3 air. We can go without food or water for a few days,but we cannot live for a few minutes without air. We take in air. When we are w4 ,we need more air;when we sleep,we need1 5 air.
We live in air b6 we cannot see it; we can only f7 it. We can feel it when it is moving. Moving air is called wind. How can you make air m8 ? Here is one way. Hold an open book in your h9 in front of your face. Close it q10 . What can you feel? It is air.
1. s 2. n 3. w 4. w 5. 1
6. b 7. f 8. m 9. h 10. q
1. side 2. need.
3. without 4. working
5. less 6. but
7. feel 8. move
9. hands 10. quickly