Question

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

Some birds like eating locusts （蝗蟲）, 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（豐收） 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（獵人）. 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（液體）when it faces danger. While the liquid spreads over（散開）, its enemies（敵人）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

Answer 1

【答案】

【1】 B

【2】 C

【3】 A

【4】 B

【5】 C

【解析】

試題不同的動物或昆蟲有它們特殊的顏色，本文主要說明了它們用自身的顏色來保護自己。

【1】總結歸納題。根據第一、二段可知，蝗蟲改變顏色來保護自己。故選：B。

【2】細節(jié)理解題。根據第二段最后兩句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.可知，與植物不同顏色的昆蟲脫離危險的方法是：它們白天躲起來，晚上出現。故選：C。

【3】細節(jié)理解題。根據第三段最后兩句They cannot be easily seen by hunters（獵人）. This is because they have the colors much like the trees.可知，熊和獅子可以保持安全，因為它們的顏色很像樹。故選：A。

【4】總結歸納題。根據最后一段可知，這魚能活到現在是因為噴出的液體能幫助它從敵人那里逃脫。故選：B。

【5】主旨大意題。根據文意可知，本文主要介紹了動物和害蟲的顏色的用途，所以“The Main Use of Colors for Animals and Pests”符合文意。故選：C。