题目内容
14.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 because people keep doing bad things to the earth.Some places on the earth don't get much rain.But they still don't become desert.This is because some green plants are growing there.Small green plants and grass are very helpful to dry places.Plants don't let the hot sun make the earth even drier.Plants can also stop the wind from blowing the earth away.When a little bit of rain falls,the plants hold the water.Without those plants,the land can become a desert much more easily.
31.Why can the land become a desert?C
A.Some places don't get much rain.
B.Hot sun makes the earth even drier.
C.People don't protect the earth well.
D.Scientists haven't learnt enough about the deserts.
32.ScientistsD to make the deserts into good land again.
A.carry water
B.grow food
C.do nothing
D.study a lot
33.Which of the following is not true?B
A.The land never stops becoming desert.
B.Scientists ask the people to live in the deserts and grow food there.
C.People do bad things to the earth.
D.Scientists may not be able to change the deserts.
34.Why are green plants and grass helpful?D
A.They can hold the water.
B.They stop the wind from blowing the earth away.
C.They can keep the earth wet.
D.All the above are right.
35.Which is the best title(题目) for the passage?A
A.The Desert Problem.
B.People Make Deserts.
C.Green Plants and Grass.
D.The Desert,the Tree and the Water.
分析 本文讲述的是沙漠问题的严重性,告诉人们树木对土壤的重要性.呼吁人们多种树,保护树木,防止土地沙漠化,建设美丽的家园.
解答 答案:31.C 细节理解题.根据第一段第二行句子Scientists may not be able to change the deserts because people keep doing bad things to the earth.科学家可能无法改变沙漠因为人们总是做破坏地球的事.可知因为人们不是很好的保护地球.故选C.
32.D 细节理解题.根据第一段第一行句子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.科学家们正在努力使沙漠再次变成肥沃的土地,他们想把水带到沙漠里来,这样人们就可以生活和种植食物了.他们在学习很多有关于沙漠的.可知科学家们研究了很多使沙漠再次变成肥沃的土地.故选D.
33.B 细节判断题.根据第一段第二行句子But more and more of the earth is becoming desert all the time.Scientists may not be able to change the deserts because people keep doing bad things to the earth.但是越来越多的土地在变成沙漠.科学家可能无法改变沙漠因为人们总是做破坏地球的事.可知没有提到科学家让人们生活在沙漠并且种植食物.故选B.
34.D 细节理解题.根据第二段第二行句子Plants don't let the hot sun make the earth even drier.Plants can also stop the wind from blowing the earth away.When a little bit of rain falls,the plants hold the water.植物不会让炎热的太阳使土地更干燥,植物也可以阻止风把土吹走,当有一点雨水落下,植物就会留住水.故选D.
35.A 主旨归纳题.根据整篇文章内容及其第一段第一句Scientists are trying to make the deserts(沙漠) into good land again.科学家们正在努力使沙漠再次变成肥沃的土地和第一段最后一句Scientists may not be able to change the deserts because people keep doing bad things to the earth.科学家可能无法改变沙漠因为人们总是做破坏地球的事.可知文章主要说的是沙漠的问题.故选A.
点评 在通读全文的基础上,根据全文大意,展开逻辑思维,瞻前顾后,认真观察选项,仔细推敲,确定最佳答案.
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