Question

【题目】根据材料内容，选择正确答案。
In nature, you may see many insects(昆虫) 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(庄稼). 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 colors
（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.产卵
C.觅食
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 idea of this passage?
A.Some insects and animals have different skills.
B.Some insects and animals are cleverer 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

【答案】
（1）D
（2）A
（3）D
（4）B
（5）C
【解析】短文主要介绍了一些动物如何利用颜色来保护自己的方式。
（1）D 根据第二段第三句“The reason is that the colors of locusts change with the colors of crops(庄稼). ”可知，蝗虫随着庄稼的颜色而改变自己的体色来保护自己。故选D。
（2）A 根据第三段倒数第三句“Soil insects are mostly dark-colored…”可知，生活在土壤中的昆虫其体色大都较暗。故选A。
（3）D 根据第三段最后一句中的“they have to hide themselves in the daytime and appear only at night”可知，昆虫在白天改变身体的颜色是为了能够隐藏自己，以免被天敌攻击，从而生存下来。故survive的意思应为“生存”。故选D。
（4）B 根据最后一段第二、三句“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. ”可知，墨鱼是通过喷墨使自己周围的水变黑来让自己逃避天敌的攻击的。故选B。
（5）C 文章主要介绍了一些动物是如何利用保护色来保护自己的。故C项最能概括文章的主旨。