一篇英语阅读Scientists are trying to make the deserts (沙漠) into good land again.They want to bring water to the deserts ,so people can live and grow food .They are learning a lot about the deserts.But more and more of the earth is becoming

一篇英语阅读Scientists are trying to make the deserts (沙漠) into good land again.They want to bring water to the deserts ,so people can live and grow food .They are learning a lot about the deserts.But more and more of the earth is becoming
一篇英语阅读
Scientists are trying to make the deserts (沙漠) into good land again.They want to bring water to the deserts ,so people can live and grow food .They are learning a lot about the deserts.But more and more of the earth is becoming desert all the time .Scientists may not be able to change the deserts.Scientists think that people make deserts.People are doing bad things to the earth.
Some places on the earth don’t get very 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 hot sun make the earth even drier.Plants don’t let the wind blow （ 吹） the dirt away.When a little bit of rain falls.The plants hold the water.Without plants ,the land can become a desert much more easily.
( ) 1.Scientists are trying to make the deserts into ______ again.
A.water B.earth C.good land D.sea
( ) 2.Small green plants are very important to dry places because ______.
A.they don’t let the sun make the earth even drier
B.they don’t let the wind blow the earth away
C.they hold the water
D.A,B and C
( ) 3.Land is becoming desert little by little （ 渐渐） because _____.
A.plants cannot grow there
B.there is not enough rain
C.people haven’t done what scientists wish them to do
D.scientists know little about the deserts
( ) 4.Which is the main idea of the first paragraph
A.Scientists know how to change the deserts into good land.
B.Land is becoming desert faster than scientists can change it back into land
C.If scientist can bring water to desert,people can live and grow food there.
D.More and more places are becoming deserts all the time.
( ) 5.After reading the passage ,we learn that _______.
A.Plants can keep dry land from （ 阻止） becoming desert
B.It is good to get rid of（除去） the grass in the deserts
C.All places without much rain will become deserts
D.It is better to grow crops（庄稼） on dry land than to grow grass

一篇英语阅读Scientists are trying to make the deserts (沙漠) into good land again.They want to bring water to the deserts ,so people can live and grow food .They are learning a lot about the deserts.But more and more of the earth is becoming
CDCDA绝对没错