《2025年多维互动提优课堂八年级英语上册译林版提升版》

B
Do you know why different animals or pests(害虫) have their special colours? Colours 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 colours together with the change of the colours of crops(庄稼). When crops are green,locusts look green. But as the harvest time comes,locusts change to the same brown colour as crops have. Some other pests with different colours 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 colouring 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 colours 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.
( )4. What can we know from the passage?
A. Locusts are small animals.
B. Locusts are dangerous to their enemies.
C. Locusts are easily found by birds.
D. Locusts change their colours to protect themselves.
( )5. How can pests with different colours from plants keep out of danger?
A. They run away quickly.
B. They have to move quietly.
C. They hide themselves by day and appear at night.
D. They have the colours much like their enemies.
( )6. Which is the best title for this passage?
A. The change of colours for animals and pests
B. Colours of different animals and pests
C. The main use of colouring for animals and pests
D. Some animals and pests

答案： 【解析】：
这是一道英语阅读理解题，主要考查学生对文章内容的理解和分析能力。题目给出了一个关于动物和害虫颜色的文章，并要求根据文章内容选择正确答案。
对于第4题，需要从文章中找出关于蝗虫的信息，判断哪个选项是正确的。
对于第5题，需要找出文章中关于颜色与植物不同的害虫如何避免危险的描述。
对于第6题，需要从文章的主题出发，选择一个最合适的标题。
【答案】：
4. D
根据文章中的描述，蝗虫会随着庄稼颜色的变化而改变自己的颜色，以此来保护自己不被鸟类轻易捕获。因此，选项D“Locusts change their colours to protect themselves.”是正确的。
5. C
文章中提到，一些颜色与植物不同的害虫会选择在白天隐藏自己，只在晚上出现，以此来避免危险。因此，选项C“They hide themselves by day and appear at night.”是正确的。
6. C
整篇文章主要讲述了动物和害虫如何利用颜色来保护自己，因此选项C“The main use of colouring for animals and pests”是最合适的标题。