Small green plants are very important to dry places because A. they don’t let the sun make the earth even drierB. they don’t let the wind blow the earth awayC. they hold waterD. all of the above 【查看更多】

 

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根據(jù)短文內(nèi)容，完成文后的選擇題

　　Scientists are trying to turn deserts into land that can be used again. They want to bring water to the deserts, so that people can live and grow food. They are learning a lot about deserts. 1 . Scientists may not be able to change the deserts in time.

　　Why is more and more land becoming desert？ Scientists think that people make deserts. 2 .

　　Some places on the earth-don't get very much rain. But they still don't become deserts. 3 . Small green plants and grass are very important to dry places. 4 . Plants stop the wind blowing the soil away. When a little bit of rain falls, the plants retain (保留；保持)the water. 5 .

[　　]

A．They don't take care of the environment properly.

B．Plants prevent the hot sun from making the earth even drier.

C．This is because plants grow there.

D．Without plants, a desert is formed much more easily.

E．But more and more of the land is becoming desert.

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Scientists are trying to make the deserts 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 desert in time.

Why is more and more land becoming desert? 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 the dirt(泥土)away. When a little bit of rain falls，the plants hold the water. Without plants, the land can become a desert much more easily.

根據(jù)短文內(nèi)容判斷正(T)誤(F)

 1. Scientists are trying to change the deserts into good land.　　

 2. Land is becoming desert little by little.

 3. Land can't become desert faster than scientists can change it back into good land.

 4. Small green plants need a lot of water.　　　　　　　　　　　　 

 5. All places without much rain will become deserts.　　　　　　  

 

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閱讀理解。
    Scientists are trying to make the deserts 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 desert in time.
    Why is more and more land becoming desert? 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 the dirt (泥土) away. When a
little bit of rain falls, the plants hold the water. Without plants, the land can become a desert much more
easily. (from www.zkenglish.com )
1. Desert is a large empty place, usually ______.
[     ]
A. almost nothing grows there
B. there is very little rain
C. people can live and grow food
D. Both A and B
2. From the reading passage we know ______.
[     ]

A. land is becoming desert little by little
B. the greatest desert in the world
C. something about the hot desert wind
D. nothing about the deserts

3. Scientists don't think that ______.
[     ]
A. we should bring water to the desert
B. more and more of the earth is becoming desert
C. people make the desert
D. little rain makes good land become desert
4. Small green plants ______.
[     ]
A. need a lot of water
B. are needed to dry places
C. can hold much water than grass
D. let the sun make the earth drier and drier
5. Which of these sentences is true?
[     ]
A. Plants let the wind blow the dirt away.
B. All places without much rain will become deserts.
C. Plants can stop dry land from becoming deserts.
D. Land can't become desert faster than scientists can change it back into good land.

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閱讀理解

　　Scientists are trying to make the deserts into land again. They want to bring water to the deserts, so people can live and grow plants. 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 deserts in time.

　　Why is more and more land becoming 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 the dirt（土）away. When a little bit of rain falls, plants hold the water. Without plants, the land can become a desert more easily.

判斷下列句子是否符合短文內(nèi)容，符合的用“T”，不符合的用“F”表示。

1. Deserts get very little rain.　　  

(    )

2. Land is becoming deserts little by little because scientists know little about the deserts.　　

(    )

3. Plants can hold water and protect dry land from becoming deserts.

(    )

4. All places without much rain will become deserts.

(    )

5. Scientists are trying to change deserts into good land.

(    )

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閱讀理解

　　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 desert in time.

　　Why is more and more land becoming desert? 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 drive. Plants don't let the wind blow the dirt（泥土）away. When a little of（一點(diǎn)兒）rain falls, the plants hold the water. Without plants, the land can become a desert much more easily.

(　　)(1)Plants can keep dry land from becoming desert

(　　)(2)It is good to get rid of（消除）the grass in the desert

(　　)(3)All places without much rain will become deserts.

(　　)(4)It's important for us to plant trees and protect（保護(hù)）forests.

(　　)(5)Scientists may not be able to change the desert in time.

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