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(莊稼). When crops are green, locusts look green. But as the harvest 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(出現(xiàn)) only at night.

If you study the animal life, you’ll find the main use of coloring is to protect(保護) 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 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. are easily found by birds

C. change their colors to protect themselves

【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】C

【2】C

【3】A

【4】B

【5】C

【解析】

【1】細節(jié)理解題。根據(jù)It is because locusts change their colors together with the change of the colors of crops(莊稼). you’ll find the main use of coloring is to protect themselves.等信息表明蝗蟲通過改變顏色來保護自己。可知選C。

【2】細節(jié)理解題。根據(jù)So they have to hide themselves for lives and appear only at night.因此為了活下來，他們不得不躲起來，只有晚上才出來活動。可知應(yīng)選C。

【3】細節(jié)理解題。根據(jù)This is because they have the colors much like the trees.“這是因為他們有著和樹一樣的顏色”，這樣他們才不容易被獵人發(fā)現(xiàn)。故選A。

【4】細節(jié)理解題。根據(jù)While the liquid spreads over , its enemies cannot find it.“這種液體能迅速擴散，敵人不能找到它。”可見它排出的液體幫助它脫逃。可知故選B。

【5】歸納理解題。通過文章列舉的幾個動物來自我保護的例子都是與顏色有關(guān)，故可推出文章的主題是動物的顏色的作用。故選C。