Question

In nature, you may see many insects (昆蟲）and animals of different colors. Have you ever wondered why?

Locusts are super delicious food for birds, but it is not always an easy job for birds to catch them. It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops(莊稼). When crops are young, locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do.

Brown bears, tigers and other animals move quietly through forests. They can’t be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil(土壤）in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive, they have to hide themselves in the daytime and appear only at night.

Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over, its enemies will find themselves suddenly in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.

1.It is not easy for birds to catch locusts because____________. .

A.locusts are good runners

B. locusts can jump very high

C. locusts are smarter than birds

D. locusts can change their color

2. According to the passage, most soil insects_________

A.do not have bright colors

B. change their colors with the soil

C. do not live in a dark and wet environment

D. Eat colorful insects like butterflies and bees

3.What’s the meaning of the underlined word “survive” in the passage?

A. 繁殖 B. 產卵 C. 覓食 D. 生存

4.The ink fish_______so that its enemies will not see it?

A. changes its color

B. makes the water around it black

C. appears only at night

D. hides itself in the sea rocks

5.What is the main ides of this passage?

A. Some insects and animals have different skills.

B. Some insects and animals are clever than we think.

C. Some insects and animals use colors to protect themselves.

D. Some insects and animals can get used to the environment easily.

Answer 1

1.D

2.A

3.D

4.B

5.C

【解析】

試題分析：本文主要講了自然界中不同的動物有不同的生存本領。例如Locusts是鳥類最好的食物，但是鳥類卻不能輕易捕捉到他們; 灰熊老虎還有許多其他的動物在森林中安靜的移動，他們不會被他們的敵人輕易發現; 生活在鮮花中的蜜蜂和蝴蝶也有鮮花一樣的顏色；海洋中墨魚的生存本領就是，當他遇到敵人時會釋放一種黑墨一樣的東西。

1.1】推理判斷題。此題根據問題It is not easy for birds to catch locusts because____________.定位到信息句The reason is that the colors of locusts change with the colors of crops(莊稼). locusts不容易被捕捉的原因是因為它們的顏色會隨著莊稼的顏色而改變，即可推知答案。故選：D。

2.2】推理判斷題。詞此題根據問題，According to the passage, most soil insects_________定位到信息句，Soil insects are mostly dark-colored and they live under the soil(土壤）in a dark and wet environment. 生活在地下的昆蟲大部分都是深顏色的，即可推知答案。故選，：A。

3.3】猜測詞義題。此試題根據上下文及語境，定位到信息句，So in order to survive, they have to hide themselves in the daytime and appear only at night，這些昆蟲在白天要不得不隱藏他們自己，是為了生存，即可推知答案。故選：D。

4.4】細節理解題。此題根據上下文及語境，詢問The ink fish_______so that its enemies will not see it? 為了不讓墨魚的敵人看到他們，墨魚會做什么？定位到信息句：The ink fish in the sea can send out some very black ink when it faces danger，墨魚會使它們周圍的水變成黑色，故可推知答案。故選：B。

5.5】主旨大意題。此題需要根據上下文語境，主旨大意題的做題技巧，主要根據文章的第一段，In nature, you may see many insects (昆蟲）and animals of different colors，在自然界，你可以看見許多昆蟲和動物用不同的顏色，即可推知文章主要討論動物和昆蟲使用顏色保護自己的問題。故選：C。

考點：科普知識類短文。