It was four in the afternoon. The sun was shining(照耀)and it was very hot.

Few people wanted to go out. Mrs. West had to meet her father at the train station. The old man wanted to see doctors in the city hospital.

Now she was walking in the street. There were no trees and she felt very hot. But she was very fat and couldn't walk fast. She didn't find a boy walking just behind her. And she met a friend and said hello to him.

"Who's the boy behind you, Mrs. West?” asked the man.

Now she saw the boy. She was angry and asked, "What are you walking be hind me for, boy?"

"There's no shade(阴凉处)in the street, you know," answered the boy.”It’s cool behind you, I think."

根据短文内容，判断下列各句正(T) 误（F）

1. Few people went out this afternoon because it was very hot outside.

2. Mr. West was ill at the train station.

3. Mrs. West was too fat to walk fast.

4. Mrs. West was going to meet her friend at the train station.

5. The boy felt cool when he was walking behind Mrs. West.

About one percent of all the rainforests in the world are lost every year. We know this because satellites give us true pictures of the rainforests. Satellite pictures tell us, for example, that between 1978 and 1988, 170,000 square kilometers of the rainforests in the Amazon were lost.

When roads are made through the rainforests, people start to destroy the forests. Look at the satellite picture taken in 1976.You can see the new road going through the rainforest. The second picture shows the same forest in 1981.The rainforest in this part of Brazil has been destroyed very quickly.

Without the trees to protect the ground, the heavy rain quickly washes away the soil beside the roads.

The rainforests are rich in trees and animals, but the soil is not rich; it is very poor because it is very old and because the trees and plants contain all the good things that were once in the soil. Without the trees, the rain washes away the soil and nothing can grow there again.

Look at the picture of Madagascar. Thousands of trees once covered these mountains, and thousands of animals lived there. Nothing can grow there now, and no animals can live there.

Are we going to destroy all the rainforests of the world? Perhaps one day you will travel to a rainforest country, but will you see the wonderful plants and animals of the rainforests?

（   ）1. How many rainforests in the world are lost every year?

A．About one billion  B．About ten percent  C．About one percent  D．About ten million

（   ）2. Why does the heavy rain wash away the soil beside the roads?

A．Because the rain is very heavy.

B．Because thousands of trees once covered these mountains.

C．Because people start to destroy the forests.

D．Because there are few trees to protect the ground.

（   ）3. How can we know about the situation of he rainforests in the world?

     A．By watching TV B．By reading books C By the radio  D． By satellite pictures

（   ）4. Can you tell me where Brazil is?

A．Yes. It’s in South America                B．Yes. It’s in North America

C．No. It’s in North Africa                 D．No. It’s in South Africa

（   ）5. What will happen one day when you travel to a rainforest country according to the passage?

A．You will see the wonderful plants and animals of the rainforests.

B．You won’t see the wonderful plants and animals of the rainforests.

C．Thousands of trees will cover these mountains, and animals will live there.

D．You can see the new road going through the rainforest.

In the past, man did not have to think about the protection of his environment．There were few people on the earth, and natural resources seemed to be enough.

　　 Today things are　 36　 , the world has become too crowded. We are using up our natural resources too quickly and at the same time we are polluting our environment with dangerous chemicals. If we keep doing this, human life on the earth 　 37　 survive(生存）.

　　 Everyone realizes today that if 　 38　 fishes are taken from the sea, there will soon be none left. Yet, with modern fishing ways, more and more fishes are caught. We know that if lots of trees are cut down, forests will disappear and nothing will grow on the earth. Yet we　 39　 to use bigger and more powerful machines to cut down trees.

　 We realize that if rivers 　 40　 with waste products from factories, fish will die.　 41　 , in most countries wastes are still put into rivers or into the sea.

We know, too, that if the　 42　 of the world keep on rising at the present rate, in a few years there will not be enough food. What can we do to solve these problems? If we eat 　 43　 , there will be more food for everyone．Land that is used to grow crops feeds　 five times more people than land where animals are kept．

　 Our natural resources will　 44　 longer if we learn to recycle them．

　 Finally, if we educate people to think about the problems, we shall have a better and cleaner　 45　 in the future.

36. A. common 　　B. the same 　　C. changeable 　　D. different

37. A. may not 　　B. will not 　　 C. shall not 　　　 D. could not

38. A. too many　　 B. many too　　 C. too much　　　 D. much too

39. A. continue 　　B. have 　　　C. ought 　　　D. decide

40. A. pollute　　 　B. will pollute　 　C. are polluted 　　　D. are polluting

41. A. And 　　　　B. However 　　　C. Generally 　　　D. Therefore

42. A. production 　　B. pollution 　　 C. population 　　D. Development

43. A. more vegetables and less meat　　　 B. less vegetables and more meat

　 C. more vegetable and more meat　　　 D. less vegetable and less meat

44. A. use 　　 B. stay 　　　C. keep 　　　 D. last

45. A. nature 　　　B. sea 　　 C. planet 　　　D. forest

There have been many great inventions or things that changed the way we live. The first great invention was the one that is still very important today——the wheel. This made it easier to carry heavy things and to travel long distance.

For hundreds of years after that there were few inventions that had as much effect as the wheel . Then in the early 1800s the world started to change. There was little unknown land left in the world. People didn’t have to explore much any more. They began to work instead to make life better.

In the second half of the 19th century many great inventions were made. Among them were the camera, the light and the radio. These all play a big part in our daily life today.

The first part of the 20th century saw more great inventions. The helicopter in 1909, movies with sound in 1926, the computer in 1928, jet planes in 1930. This was also a time when a new material was first made. Nylon came out in 1935. It changed the kind of clothes people wore.

The middle part of the 20th century brought new ways to help people get over diseases. They worked very well. They made people healthier and allowed them to live longer. By the 1960s most people could expect to live to be at least 60.

By this time most people in developed countries had a very good life. Of course new inventions continued to be made. But man now had a desire(渴望) to explore again. The earth was known to man but the stars were not. Man began looking for ways to go into space. Russia made the first step. Then United States took a step. Since then other countries , including China and Japan, have made their own steps into space.

In 1969 man took his biggest step away from earth. Americans first walked on the moon. This is certainly just a beginning, though. New inventions will some day allow us to do things we have never yet dreamed of.

1.This passage talks mainly about _______________ .

A．why cars were very important

B．when light was invented

C．how inventions affect people’s daily life

D．which country made the first step into space

2.According to the passage man didn’t have a desire to explore a lot ___________.

A．at the beginning of 1800s

B．in the 1960s

C．since the 1900s

D．from the 1800s to 1960s

3.Nylon came out five years later than____________ .

A．radio             B．camera           C．jet planes         D．movies

4.People can live longer lives because ________ that help cure diseases have worked very well.

A．doctors                               B．new ways

C．medicines                             D．new hospitals