Question

Passage 19(2013 广东，B) 

      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^ 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 darkcolored 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. 

l.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

1. D 2. A 3. D 4. B 5. C

Passage 19

1. D细节理解题。由题干可知是关于鸟很难捕捉到蝗虫的原因，从 第二段可知是因为它们能变色，所以选D.

2. A推理判断题。由第三段第六句可知选A.

3. D词义猜测题。第三段最后两句说的是昆虫昼伏夜出的目的，只有“生存”符合全文的总体意思。

4. B推理判断题。根据最后一段二、三句可知墨鱼是喷墨逃跑，所以选B.

5. C主旨大意题。根据全文总体意思可知是讲动物的保护色，所以选C.