Do you know why different animals or pests have their special colors? Colors in them seem to be used mainly to protect themselves.Some birds like eating locusts , but birds cannot easily catch them. W 题目和参考答案——青夏教育精英家教网—

精英家教网 > 初中英语 > 题目详情

Do you know why different animals or pests （昆虫） have their special colors? Colors in them seem to be used mainly to protect themselves.

Some birds like eating locusts （蝗虫）, but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as the harvest（丰收） time comes, locusts change to the same brown color as crops have. Some other pests with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.

If you study the animal life, you’ll find the main use of coloring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters（猎人）. This is because they have the colors much like the trees.

Have you ever noticed an even stranger act? A kind of fish in the sea can send out a kind of very black liquid（液体）when it faces danger. While the liquid spreads over（散开）, its enemies（敌人）cannot find it. And it immediately（立刻）swims away. So it has lived up to now though it is not strong at all.

1.From the passage we learn that locusts________.

A. are small animals B. change their colors to protect themselves

C. are dangerous to their enemies

2.How can pests with different colors from plants keep out of danger?

A. They run away quickly. B. They have the colors much like their enemies.

C. They hide themselves by day and appear at night.

3.Bears and lions can keep safe because _________.

A. they have the colors much like the trees B. they move quietly

C. they like brown and gray colors

4.Why can the kind of fish live up to now?

A. Because it is very and strong.

B. Because the liquid it sends out can help it escape from its enemies.

C. Because the liquid it sends out can kill its enemies.

5.Which is the best title for this passage?

A. The Change of Colors for Animals and Pests B. Colors of Different Animals and Pests

C. The Main Use of Colors for Animals and Pests

练习册系列答案

初中学业水平考试历史与社会思想品德精讲精练系列答案

精华讲堂系列答案

同步精练课时作业达标训练系列答案

年级	高中课程	年级	初中课程
高一	高一免费课程推荐！	初一	初一免费课程推荐！
高二	高二免费课程推荐！	初二	初二免费课程推荐！
高三	高三免费课程推荐！	初三	初三免费课程推荐！
更多初中、高中辅导课程推荐,点击进入>>

相关习题

科目：初中英语 来源：福建省泉州市2018-2019学年初一年级上学期第一次月考（含听力）英语试卷 题型：单选题

下列大小写字母不对应的一组是 ____。

A. R—r B. G —g C. B—d

查看答案和解析>>

科目：初中英语 来源：河北省2018-2019学年七年级上学期第二次月考（含听力试卷）英语试卷 题型：阅读单选

Wu Dong has a good friend. His name is Peter. He is from the USA. Wu Dong and Peter are in the same class. They go to school five days a week. They stay at home on Sundays and Saturdays. Peter likes China and Chinese food. He likes rice cakes very much. At school they play ping-pong ball after class.

Wu Dong and Peter like making things. Now they are making a model plane. They like flying model planes on Sunday mornings. Peter speaks English and a little Chinese. Wu Dong speaks Chinese and a little English. They teach each other.

1.Where does Wu Dong’s friend come from?

A. He comes from the UK. B. He comes from the USA.

C. He comes from China. D. He comes from Canada.

2.What do they do after class?

A. They play ping-pong ball at home. B. They play ping-pong ball at school.

C. They make things at home. D. They make things at school.

3.What do they teach each other?

A. Wu Dong teaches Peter English and Peter teaches Wu Dong Chinese.

B. Wu Dong teaches Peter Chinese and Peter teaches Wu Dong English

C. Wu Dong teaches Peter to play tennis.

D. Peter teaches Wu Dong to make a model plane.

4.Which one of the following is NOT true?