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阅读理解
     Do you know why different animals or pests(昆虫) have their colors? They have the colors 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(收获)time comes, locusts change to the same brown color as crops have.Some pests with different
colors from plants are usually in danger because others can easily find and eat them.So they have to hide themselves
for lives and appear only at night.
     (18)If you study the animal life,you'll find that the main use of colors for animals and pests is to protect themselves.
Bears, lions and other animals move quietly through forests. Hunters cannot easily find them because they have the
colors much like the trees.
     Do you ever find an even more strange act? (19)A kind of fish in the sea can send out a kind of very black liquid
(液体) when they are in danger.
While the liquid spreads over(散开),their enemies(敌人)cannot find them. And they
can swim away easily.
任务一:根据短文内容回答问题。
1. How can pests with different colors from plants protect themselves?
    __________________________________________________
2. Why can bears and lions keep safe?
    __________________________________________________
任务二:将文中画线的句子翻译成汉语。
3.___________________________________________________
4.___________________________________________________
任务三:选择。
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
D. Some Animals and Pests
1. They hide themselves and appear only at night.
2. Because they have the colors much like the trees.
3.如果你研究动物的生活,你将会发现对于动物和昆虫来说,颜色的主要用途是自我保护。
4.海里的一种鱼在处于危险时,可以散发出一种非常黑的液体。
5.C
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