选词填空

选词填空

Do you know why different animals or insects have their special colors? Colors are used mainly to protect themselves.

Why can’t some birds easily catch locusts（蝗虫）? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as autumn comes, locusts change to the same brown color as crops have. Some other insects with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives in the day and appear only at night.

If you study the animal life, you’ll find the main use of coloring is to protect themselves. Bears, lions and other animals can’t be easily seen by hunters. This is because they have the colors much like the trees.

Have you ever noticed an even more strange thing? A kind of fish in the sea can send out black liquid when it faces danger. While the liquid spreads over, its enemies can’t find it. And it quickly swims away. So it has lived up to now though it is not strong at all.

1. From the article we learn that locusts 　　　　　　　　　.

A. are dangerous to their enemies           B. are easily found by birds

C. change their colors to protect themselves   D. are small animals

2.How can insects with different colors from plants keep out of danger?

A. They have to move quietly.

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

C. They have the colors much like their enemies.

D. They run away quickly.

3. Bears and lions can keep safe because 　　　　　　　　　.

A. they live in forests                  B. they like brown and grey colors

C. they move quietly　                   D. they have the colors similar to the trees

4.What does the word “liquid” mean in the last paragraph?

A. 气体          B. 固体　       C. 液体　       D. 水蒸气

5. Which is the best title for this passage?

A. The Main Use of Colors for Animals and Insects

B. Colors of Different Animals and Insects

C. The Change of Colors for Animals and Insects

D. The Change of Different Animals and Plants

A thousand years ago Hong Kong was covered by a thick forest. As more and more people came to 　1　 in Hong Kong, these trees were cut down and burnt. Now there is 　2　 forest left, though there are still some small areas covered with trees. We call these woods.
Elephants, tigers and many 　3　 animals were living in the thick forest. When people came to live in Hong Kong, the 　4　 began to die out. Early farmers grew rice and 　5　 pigs and chickens in the valleys. They cut down the trees and burnt them. They needed 　6　 to keep themselves warm in winter, to cook their food and to keep away the dangerous animals. Elephants quickly disappeared because there was not enough food for them. So did 　7　 of the wolves and tigers. Monkeys and many other animals soon 　8　 in the same way.
You might think that there are no longer any animals in Hong Kong 　9　 in the zoos. But there are still about 36 different animals 　10　 there. One of the most interesting of Hong Kong's animals is the barking deer. These are beautiful little animals 　11　 a rich brown coat and a white patch (补丁) under the tail. They look like deer but they are much smaller. They are less than two feet（英尺） 　12　. They make a noise rather like a dog 　13　. In Hong Kong the barking deer has only a real enemy--　14　. People hunt these little animals though it is illegal (违法的). There are now not many barking deer left. So it is important 　15　 people to protect wild animals.