Everyone 1 air. Air is all around us. lt's around us when we go and play. Since we were bom,air has been around us on every side. 2 we sit down,it's aroundus. When we go to bed,air is 3 around us. So we can say we live in air.
All living things 4 air. Living things can't live 5 air. We can go without food or water for more than a few days. But we can't live for more than a few 6 without air. When we are sleeping,we need less air.
We live in air,_7 we can't see it. We can only feel it. We can feel it when it is moving (移动 ) . Moving air is wind. 8_can you make air move? Here is one 9 . Hold an open book in your hands in front of yourface. Close it 10 , and what can you feel? It's air.
( )1. A. know ' B. knows C. knowing D. knew
( )2. A. When B. What C. Why D. How
( )3. A. also B. too C. either D. neither
( )4. A. like B. don't like C. needs D. need
( )5. A. with B. thout C. for D. of
( )6. A. years B. days C. minutes D. months
( )7. A. but B. because C. so D. if
( )8. A. Why B. How C. What D. Where
( )9. A. way B. road C. street D. bench
( )10.A. quick B. terrible C. soon D. quickly