The World’s Water Shortage

　 The world is not only hungry, but it is also thirsty for water. This may seem strange to you, since nearly 70 percent（百分比）of the earth’s surface is covered with water. But about 97 percent of this huge amount is sea water, or salt water. Man can only drink and use the other 3 percent－the fresh water from rivers, lakes, underground, and other sources（资源）. And we cannot even use all of that, because some of it is in the form of icebergs and glaciers（冰川）. Even worse, some of it has been polluted.

　 However, as things stand today, this small amount of fresh water is still enough for us. But our need for water is increasing（增加）rapidly－almost day by day. Only if we take steps to deal with this problem now can we avoid（避免）a severe（严重的）worldwide water shortage later on.

　 We all have to learn how to stop wasting our valuable water. One of the first steps is to develop ways of reusing it.

　 Today in most large cities, water is used only once and then sent out into a sewer system（下水道）. From there it returns to the sea or runs into underground storage tanks. But it is possible to pipe used water to a purifying（净化）plant. There it can be treated with chemicals so that it can be used again, just as if it were fresh from a spring.

　 But even if every large city purified and reused its water, we still would not have enough. All we’d have to do to make use of the vast reserves（贮备）of sea water in the world is to remove the salt.

　 If we take these steps we’ll be in no danger of drying up.

1. The world is thirsty for water because we can only use _________ percent of the water covering the surface of the earth.

　 A. 3　　　　　 B. more than 3　　　 C. less than 3　 　 D. 97

2. Which of the following statements is Not true?

　 A. As things remain unchanging, this small amount of fresh water is still enough for us.

　 B. Our need for water is becoming larger and larger.

　 C. There will be no water shortage in the future.

　 D. We should take steps to deal with the water shortage problem.

3. To reuse water, we should __________.

　 A. treat it with chemicals

　 B. use it only once

　 C. send it out into a sewer system

　 D. make it flow into underground tanks

4. In order to have enough water, we should also make use of _________.

　 A. icebergs and glaciers

　 B. sea water

　 C. rivers and lake

　 D. underground water

5. In the passage, the writer tells us ________.

　 A. to make enough water

　 B. to pay more attention to the water shortage problem

　 C. to pipe used water to a purifying plant

　 D. to reuse the water

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.

—Dirty water shouldn’t be poured into rivers.

—_______.It will cause pollution.

A. Don’t say like this　　　　　　　 B. Never mind

C.I agree with you　　　　　　　　　D. The same to you