Question

【題目】 Do you know why different animals or pests(昆蟲) have their special colors? Their colors 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 colors of crops. When crops are green，locusts look green. But as the harvest time comes，locusts change to the same brown colors 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 will find the main use of colors is to protect themselves. Bears，lions and other animals move quietly through forests. They cannot be easily seen by hunters. 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 when they face danger. While the liquid spreads over(散開)，their enemies cannot find them. And they immediately swim away. So they have lived up to now though they are not strong at all.

【1】From the passage，we learn that locusts ________．

A.change their colors to protect themselves

B.are dangerous to their enemies

C.are easily found by birds

D.are small animals

【2】How can pests with different colors from plants keep out of danger?

A.They have the colors much like the enemies.

B.They hide themselves by day and appear at night.

C.They run away quickly.

D.They have to move quietly.

【3】Bears and lions can keep safe because ________．

A.they live in forests

B.they have the colors much like the trees

C.they move quietly

D.they like brown and gray colors

【4】Why can the fish mentioned(提到) in the last paragraph live up to now?

A.Because they are very big and strong.

B.Because the liquid they send out can help them escape from their enemies.

C.Because they swim faster than any other fish.

D.Because the liquid they send out can kill their enemies.

【5】Which is the best title for this passage?

A.Colors of Different Animals and Pests

B.The Main Use of Colors for Animals and Pests

C.The Change of Colors for Animals and Pests

D.Some Animals and Pests

Answer 1

【答案】

【1】A

【2】B

【3】B

【4】B

【5】B

【解析】

短文大意：短文主要介紹了動物和昆蟲的一種自我保護方法，它們通過改變自身顏色來適應周圍環(huán)境，不讓敵人發(fā)現(xiàn)自己。

【1】題意：從文章中，我們了解到蝗蟲改變顏色是為了保護自己。考查細節(jié)理解。根據(jù)開頭“Their colors seem to be used mainly to protect themselves它們的顏色似乎主要用來保護自己”，結合下文“If you study the animal life, you will find the main use of colors is to protect themselves如果你研究動物的生活，你會發(fā)現(xiàn)顏色的主要用途是保護自己”可知，蝗蟲靠改變顏色來保護自己，change their colors to protect themselves符合題意，故選A。

【2】題意：植物身上不同顏色的昆蟲是如何避免危險的？考查細節(jié)理解。根據(jù)“So they have to hide themselves for lives and appear only at night.所以他們不得不躲起來，只在晚上出現(xiàn)”，可知蝗蟲白天躲藏晚上出現(xiàn)；They hide themselves by day and appear at night符合題意，故選B。

【3】題意：熊和獅子可以保持安全，因為他們的顏色很像樹木。考查細節(jié)理解。根據(jù)“This is because they have the colors much like the trees. 這是因為它們的顏色很像樹木”可知選B。

【4】題意：為什么最后一段提到的魚可以活到現(xiàn)在？考查細節(jié)理解。根據(jù)“A kind of fish in the sea can send out a kind of very black liquid when they face danger . While the liquid spreads over，their enemies cannot find them海里的一種魚在遇到危險的時候會發(fā)出一種黑色的液體。當液體擴散的時候，他們的敵人找不到他們”，可知它們噴出的液體能夠幫助它們脫離危險，Because the liquid they send out can help them escape from their enemies符合題意，故選B。

【5】題意：這篇文章最好的標題是什么？考查標題歸納。根據(jù)中心句“Their colors seem to be used mainly to protect themselves它們的顏色似乎主要用來保護自己”，可知短文介紹的是，動物通過改變自身顏色來適應周圍環(huán)境，從而不讓敵人發(fā)現(xiàn)自己。備選項“The Main Use of Colors for Animals and Pests動物和昆蟲顏色的主要用途”符合文意，故選B。

本文內容比較簡單，理解不難。題目以細節(jié)理解為主，各小題與上下文聯(lián)系比較緊密，答題中一定要注意聯(lián)系上下文。答完后多讀幾遍，看看是否符合邏輯，適當修改。例如小題1，問我們從文章中了解到什么，考查細節(jié)理解；根據(jù)開頭“Their colors seem to be used mainly to protect themselves它們的顏色似乎主要用來保護自己”，結合下文“If you study the animal life, you will find the main use of colors is to protect themselves如果你研究動物的生活，你會發(fā)現(xiàn)顏色的主要用途是保護自己”可知，蝗蟲靠改變顏色來保護自己，change their colors to protect themselves符合題意，故選A。