Question

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Millions of years ago dinosaurs (恐龍)lived on the earth. In the days of dinosaurs the whole earth was warm and wet. There were green forests and they could find enough to eat. Later, parts of the earth became cold and dry, and the forests there died. Then dinosaurs could not find enough to eat. This must be one reason why dinosaurs died out.

  We can guess another reason. New kinds of animals came on the earth. Some had big brains and were fast and strong. They could kill dinosaurs.

  There may be other reasons that we don’t know about yet. Scientists are trying to make more discoveries about dinosaurs.

  Dinosaurs were of many sizes and shapes(形狀)。Some were as small as chickens, while some were about 90 feet long.

  There were also terrible fights between dinosaurs. They might have happened more than 100 million years ago. Though there was no man to see any of the fights, we can be told by the animal’s footprints(足跡)that fight did take place.

1．According to the passage, dinosaurs did exist (存在) only　　   on the earth.

A. for millions of years

B. millions of years ago

C. more than 100 million years ago

D. when it was warm and wet somewhere

2．One reason why dinosaurs died out is that　　   .

A. there were too many dinosaurs

B. parts of the earth became cold and dry

C. the dead forests there could not supply them with enough food

D. they couldn’t find enough to eat

3．One more reason may be that　　   .

A. new kinds of animals came on the earth

B. some fast and strong animals with big brains could kill them

C. some dinosaurs were as small as chickens

D. some big dinosaurs died in the fights

4．We can see from this passage　　   .

A. scientists are trying to make some dinosaurs

B. dinosaurs are dangerous enough

C. dinosaurs are worth studying

D. scientists know nothing about dinosaurs

5．That terrible fights can be explained by　　   .

A. footprints of the animals

B. imagination (想象)

C. rocks and forests

D. dinosaur’s eggs

 

Answer 1

答案：B;D;B;C;A
解析：

1、Millions of years ago dinosaurs (恐龍)lived on the earth.根據(jù)這句可知，本題選B。 2、該題為語(yǔ)篇理解題。通過理解Later, parts of the earth became cold and dry and the forests there died. Then dinosaurs could not find enough to eat. This must be one reason why dinosaurs died out.可看出沒有足夠的東西可吃是恐龍絕種的原因。 3、根據(jù)第二段可知，本題選B。 4、該題為推理判斷題。從文中There may be other reasons that we don’t know about yet. Scientists are trying to make more discoveries about dinosaurs來(lái)分析推理，恐龍還有待于進(jìn)一步研究而且也值得研究。 5、該題為句義理解題。從Though there was no man to see any of the fights, we can be told by the animal’s footprints that fight did take place.可看出該題答案。

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