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Where does the wind come from? What make...

Where does the wind come from? What makes the wind move all the time? Scientists tell us that it is the sun that makes it move, and makes it blow. When the sun shines on the earth, it makes the earth hot. Then the earth makes the air hot. When the air becomes hotter, it also becomes lighter. The light air goes up. Cool air comes in to take the place of(代替) the hot air. The hot light air goes up higher and higher until it becomes cool. Then it comes down again, and then the earth makes it hot again, and it has to go up. When the air moves, we have wind.

1.What makes the wind move?

A. The air.    B. The sun.    C. The earth    D. The cloud.

2."When the air becomes hotter, it also becomes lighter." Here "it" means "_______".

A. the sun    B. the wind    C. the earth    D. the air

3.Which is TRUE?

A. The hot air is heavier than the cool air.

B. The cool air goes up to take the place of the hot air.

C. The air moves to make the wind.

D. On rainy days we can never feel wind.

4.Which is the right order according to the passage?

a. The earth makes the air hot.

b.The hot air goes up.

c. The sun shines on the earth.

d. The hot air becomes cool.

A. a-b-c-d    B. b-a-c-d    C. c-a-b-d    D. d-a-b-c

5.The passage mainly tells us_______.

A. how the wind comes out    B. what the wind is

C. when we have the wind    D. when the air becomes hot

 

1.B 2.D 3.C 4.C 5.A 【解析】风是如何形成的?这篇短文给我们详细介绍了风的形成过程。 1.细节理解题。根据短文的开头Where does the wind come from? What makes the wind move all the time? Scientists tell us that it is the sun that makes it move, and makes it blow.可知,是太阳让风流动,让风吹。故应选B。 2.细节理解题。根据句意和下句话The light air goes up可知,当空气变得更热的时候,它也变得更轻,轻的空气就会上升。由此可知这里的it指的就是句中的主语the air,空气,故应选D。 3.推理判断题。根据短文中When the air moves, we have wind.可知,当空气流动的时候,就有了风,由此可知C选项是正确的,选C。根据When the air becomes hotter, it also becomes lighter. The light air goes up. Cool air comes in to take the place of(代替) the hot air.可知,热空气比冷空气更轻,故A不对;根据Cool air comes in to take the place of(代替) the hot air可知,热空气上升,冷空气来替代热空气,故B不对;根据常识可知,在下雨的时候,可以有风,故D不对。 4.细节理解题。根据文意可知,因为太阳照射地球,使空气变热。热空气上升,然后变凉。地球再使空气变热,热空气再上升,然后再变凉。这样空气的流动就形成了风。因此C选项的顺序是符合文意的。 5.主旨大意题。这篇短文给我们讲述的是风是如何形成的。短文先用了两个问题来引出文章的主题,然后详细描写了风的形成过程。因此A选项能概括文章大意,选A。
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