题目内容

6.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(庄稼).When crops are green,locusts look green.But as the harvest 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 swims away.So it has lived up to now though it is not strong at all.

56.From the passage we learn that locustsD.
A.are small animals
B.are easily found by birds
C.are dangerous to their enemies
D.change their colors to protect themselves
57.How can pests with different colors from plants keep out of danger?C
A.They run away quickly.
B.They have the colors much like their enemies.
C.They hide themselves by day and appear at night.
D.They have to move quietly.
58.Bears and lions can keep safe becauseA.
A.they have the colors much like the trees
B.they move quietly
C.they like brown and gray colors
D.they live in forests
59.Why can the kind of fish live up to now?B
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.
D.Because it swims faster than any other fish.
60.Which is the best title for this passage?C
A.The Change of Colors for Animals and Pests
B.Colors of Different Animals and Pests
C.The Main Use of Colors for Animals andPests
D.Some Animals and Pests.

分析 本文是一篇说明文,主要介绍了动物和昆虫是如何通过颜色来保护自己的.有的动物自身的颜色跟周围环境的颜色很像,使猎人很难发现,有的害虫的颜色不同于植物,它们白天躲藏起来,晚上出现,从而避开危险.

解答 56.D 细节理解题 根据It is because locusts change their colors together with the change of the colors of crops(庄稼).描述,可知蝗虫通过改变颜色来保护自己,故选D. 
57.C 细节理解题 根据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.描述,可知有些害虫的颜色不同于植物,它们白天躲藏起来,晚上出现,从而避开危险,故选C. 
58.A 细节理解题 根据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.描述,可知熊和狮子能安全生存是因为它们有着和树木很像的颜色,故选A. 
59.B 细节理解题 根据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 swims away.描述,可知那种鱼能够生存是因为它们喷出的液体能够使它们从对手那里逃生,故选B.
60.C主旨大意题 通过阅读短文,可知本文主要介绍了动物和昆虫是如何通过颜色来保护自己的,故选C,颜色对于动物和昆虫的主要用途.

点评 做阅读理解时,要注意培养自己快速阅读的习惯.切不可在个别难懂的词句上磨蹭,只要全篇理解了,个别难懂的词句可以根据上下文和构词法去猜测,去推断.

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