Question

【题目】阅读理解。

Scientists are trying to make the deserts into good land again.They want to bring water to the deserts so that people can live and grow food there.They are learning a lot about the deserts,but more and more of the earth is becoming deserts all the time.Scientists may not be able to change the desert in time.

Why is more and more land becoming deserts?Scientists think that people make deserts.People are doing bad things to the earth.For example,scientists tell the people how important plants are for stopping land becoming desert,but people don’t pay enough attention to the green plants.

Some places on the earth don’t get much rain.But they still don’t become deserts.This is because some green plants are growing there.Small green plants and grass are very important to dry places.Plants don’t let the sun make the earth even drier.Plants don’t let the wind blow the soil away.When a bit of rain falls,the plants hold the water.Without plants,the land can become desert more easily.The present fact is that green plants on the earth are fewer and fewer.If there were no green plants on the earth,the whole earth would become desert.

【1】Deserts .

A.never have any plants or animals in them before

B.can all be turned into good land soon

C.have little water or plants

D.make the earth drier

【2】Small green plants are very important to dry places because .

A.they don’t let the sun make the earth into good land

B.they don’t let the wind blow soil away

C.they are green

D.they have leaves

【3】After reading this,we learn that .

A.plants can keep dry land from becoming deserts

B.it is good to get rid of the grass in the deserts

C.all places without much rain will become deserts

D.it is better for the dry land to grow grass than to grow trees

Answer 1

【答案】

【1】C

【2】B

【3】A

【解析】

试题解析:

【1】由文章第一段第二句“They want to bring water to the deserts so that people can live and grow food there.”可推出deserts为缺水的地区,再由常识“沙漠就是缺水、少植物的地区”我们也可选出答案。

【2】本题由第三段第六句“Plants don’t let the wind blow the soil away.”可知植物可以阻止风把土壤吹走,由此得出答案为B项。

【3】整篇文章都在告诉我们这样一个不争的事实:植物对于阻止土壤沙化起着非常重要的作用。