甘肃专升本英语阅读理解练习关于自然界颜色的运用

　　库课网校分享给大家甘肃专升本英语阅读理解练习题关于自然界颜色的运用，希望能给甘肃专升本的考生带来帮助。

　　甘肃专升本英语阅读理解练习题

　　Have you ever wondered why different animals or pests have their particular colors? Colors in them seem to be used mainly to protect themselves.

　　Birds, especially seagulls, are very fond of locusts, but birds cannot easily catch locusts because locusts change their colors together with the change of the color of crops. When crops are green, locusts look green. But when crops are ripe, locusts take on exactly the same brown color as crops have. Some other pests with different colors from plants are usually easily found and eaten by their enemies. So they have to hide themselves in terror for lives and appear only at night.

　　If you study the animal life in any part of the world, you will find the main use of coloring is to protect themselves. Bears, wolves and other beasts move quietly through forests. They are usually invisible to the eyes of hunters, because they have the color much like the barks of trees.

　　An even stranger act remains to be noticed. A kind of fish living in seas can send out a kind of very black liquid when it faces danger. While the liquid spreads over, its enemies cannot find it, and it immediately swims away. Thus,it has existed up to now though it is not powerful at all.

　　1. This passage mainly talks about ______.

　　A. the change of color in locusts

　　B. the protective coloration of animals and pests

　　C. how a certain sea fish protects itself

　　D. animals or pests can dye themselves different colors

　　2. Locusts are not easily wiped out by their enemies because ______.

　　A. they are powerful enough

　　B. they are dangerous to their enemies

　　C. they take on the same colors as crops

　　D. they fly extraordinary fast

　　3. The pests that have different colors from plants usually appear at night because ______.

　　A. birds take their rest when night comes

　　B. their enemies can easily find them and eat them

　　C. they have the habit of coming out in darkness

　　D. it’s easy for them to destroy plants in darkness

　　4. Bears and wolves have the same colors as barks of trees because ______.

　　A. they fear other beasts

　　B. they prefer brown or grey colors

　　C. they enjoy walking through forests quietly

　　D. the colors help prevent themselves from being noticed

　　5. A certain fish living in seas has lived through millions of tears because ______.

　　A. it is the most powerful in the sea

　　B. it can swim much faster than any other fish

　　C. it can send out a kind of liquid which makes its enemies unable to find it

　　D. it can send out a kind of liquid which can kill its enemies

　　译文

　　您是否曾经想过为什么不同的动物或害虫具有特定的颜色?它们中的颜色似乎主要用于保护自己。

　　鸟类，特别是海鸥，非常喜欢蝗虫，但是鸟类无法轻易捕捉到蝗虫，因为蝗虫会随着农作物的颜色变化而变色。当农作物为绿色时，蝗虫看起来为绿色。但是，当农作物成熟时，蝗虫呈现出与农作物完全相同的棕色。通常，很容易发现其他一些与植物颜色不同的害虫，并被它们的敌人食用。因此，他们必须终身躲在恐怖之中，直到晚上才露面。

　　如果您研究世界任何地方的动物生活，就会发现着色的主要用途是保护自己。熊，狼和其他野兽在森林中安静地移动。猎人通常看不见它们，因为它们的颜色很像树皮。

　　甚至还有一个陌生的举动值得关注。一种生活在海洋中的鱼在面临危险时会发出一种非常黑的液体。当液体扩散时，它的敌人找不到它，它立即游走了。因此，尽管它根本不强大，但它一直存在到现在。

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