Question

Do you know why different animals or pests have their special colours? Colours in them seem to be used mainly to protect themselves.

Some birds like eating locusts，but birds cannot easily catch them. Why? It is because locusts change their colours together with the change of the coloursof crops. When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown colour as crops have. Some other pests with different colours 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’ll find the main use of colours is protecting themselves. bears, lions and other animals move quietly through forests. They cannot be seen by hunters. This is because they have the colours much like the tree.

Have you ever noticed an even more strange act? A kind of fish in the sea can send out a kind of very black liquid when it faces danger. While the liquid spread over, the enemies cannot find it. And it immediately swims away. So it has lived up to now though it isn’t strong at all.

1.From the passage we can learn that locusts .

A. are small animals

B. are easily found by birds

C. are dangerous to their enemies

D. change their colours to protect themselves

2.How can pests with different colours from plants keep out of danger?

A. They run away quickly.

B. Their colours are much like their enemies.

C. They hide themselves in the day and appear at night.

D. They have to move quietly.

3.Bears and lions can keep safe because they .

A. have the colours much like the trees

B. move quickly

C. like brown and grey colours

D. live in forests

4.The kind of fish can live up to now because .

A. it is very big and strong

B. the liquid it sends out can help it escape from its enemies

C. the liquid it sends out can kill its enemies

D. it swims faster than any other fish

5.Which is the best title for this passage?

A. The Change of Colours for Animals and Pests

B. Colours of Different Animals and Pests

C. The Main Use of Colours for Animals and Pests

D. Some Animals and Pests

Answer 1

1.D

2.C

3.A

4.B

5.C

【解析】

試題分析：這篇短文主要介紹了為什么不同的動(dòng)物或害蟲有其特殊的顏色。它們的顏色主要用于保護(hù)他們自己。作者列舉了蝗蟲，獅子，魚等動(dòng)物說明這一觀點(diǎn)。

1.】歸納理解題。根據(jù)短文第二段It is because locusts change their colours together with the change of the coloursof crops.描述可知蝗蟲為了不讓鳥捉住，會(huì)隨著植物的顏色變化，故選D。

2.Some other pests with different colours from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night故選C.

3.細(xì)節(jié)理解題。根據(jù)第三段This is because they have the colours much like the tree.故選A。

4.A kind of fish in the sea can send out a kind of very black liquid when it faces danger.故選B.

5.標(biāo)題歸納題。根據(jù)短文的大意可知?jiǎng)游锘蚝οx的特殊顏色的用途，故選C.

考點(diǎn)：科普類短文閱讀。