完型填空：阅读下面短文，掌握其大意，然后从1-20个题所给的四个选项中，选出一个最佳答案。

　　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  1 .

　　Today things are  2 , the world has become too  3 . We are using up our natural resources too quickly, and at the same time we are  4 our environment with dangerous chemicals. If we continue to do this, human life on the earth  5 survive.

　　Everyone  6 today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing  7 , more and more fish are caught. We know that if too many trees are cut down,  8 will disappear and nothing will grow on the land. Yet, we  9 to use hugger and more powerful machines to  10 more and more trees.

　　We realize that if rivers are polluted with waste products from factories, we will die.  11 , in most countries wastes are  12 put into rivers or into the sea, and there are  13 laws to stop this.

　　We know, too, that if the  14 of the world continues to rise at the present rate, in a few years, there will not be enough  15 . What can we do to solve these problems?

　　If we eat more vegetables and less  16 , there will be more food available for everyone. Land that is used to grow crops  17 five times more people than land where animals are kept.

　　Our natural resources will  18 longer if we learn to recycle them.

　　The world population will not rise so quickly if people use modern methods of birth  19 .

　　Finally, if we educate people to think about the problems, we shall have a better and cleaner  20 in the future.

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　　Do you know insurance? Buying insurance is a 1 by which people can protect themselves 2 large losses. Protection against fire is one kind of insurance. Large numbers of people pay 3 sums of money to an insurance company. Although thousands of people have paid for fire insurance, only 4 will lose their homes by fire. The insurance company will pay for these homes out of the sums of money it has 5 .

　　The first modern fire insurance company was 6 in London, England, in 1666. A great fire had just 7 most of the city, and people wanted protection against 8 losses. The first company 9 rapidly. Soon other companies were founded in other areas.

　　Bemjamin Franklin helped form the first fire insurance company in America in 1752. He also 10 a new kind of insurance for 11 . The new insurance would offer protection against the loss of crops 12 storms.

　　In 1795, Benjamin Franklin helped start 13 new insurance company in America. This company, 14 offered life insurance, collected some money 15 from many different men. 16 a man died, his family was given a large sum of money. Today, this company is 17 in business.

　　Over the years, people have 18 from many new kinds of insurance when they have suffered from 19 accidents as car and plane crashes. 20 , almost everyone has some kind of insurance.

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　　Ellen Parker was worried about her health. She couldn't walk very quickly and it was difficult for her to climb stairs, she was soon out of 1 .

　　“ 2 I had better g o to the doctor.” she thought.

　　She went to the doctor and told him her 3 .

　　“I'm not at all 4 .” he said.“It is clear what your problem is.”

　　He examined her and then gave her some 5 .“If you don't do what I say, Mrs Parker.” he said. “ 6 you will have a heart attack. It could 7 you.”

　　Ellen was very worried as she left the doctor's.

　　She knew that she had to take his advice but that it would not be 8 and that it would 9 time.

　　The 10 day she went shopping. The first shop she went into was a 11 shop.

　　“I'd like ten pounds of steak, please.” she said.

　　“ 12 , madam.” the butcher replied and went into the cold storage room and 13 a large piece of steak.

　　He brought the huge piece of meat 14 into the shop and placed it on the scale (秤).

　　“That's 15 under ten pounds.” he said.

　　The butcher worked out the 16 .

　　“ 17 $4.99 a pound that will be $45.5, please. 18 I cut it up into small piece for you?”

　　“Oh, I don't want to buy the meat.” Mrs Parker said.

　　“If you don't want to buy it,” the butcher 19 ,“why did you ask me to get it for you?”

　　“I just want to see 20 10 pounds of meat looked like.”

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　　Trudy, an American girl, tried swimming across the English Channel. That was August 6,1962. Her father had 1 her two things. One was not to pull her out of the water 2 she asked. The other was to give her a red sports 3 if she made it.

　　In gay spirits Trudy 4 out, swimming strongly. All the swimmers started at 7:09 in the morning. Her father and trainer were 5 along in a boat beside her.

　　At ten o'clock, rain began falling. At midday, Trudy trod (踩) water while 6 and eating a chicken leg. Then she started swimming again. The wind was 7 and the sea became rougher.

　　Late 8 the wind became even worse. The trainer decided it was 9 trying to finish. He called to Trudy to 10 .“No human being could do it in this 11 ,” he said,“It's stupid to go on.”

　　However, her father shouted,“Don't grab (抓住) her. Let her 12 .”

　　At seven o'clock the tides turned 13 her. It was more difficult to move ahead. But Trudy still swam on. She 14 victory was possible now, for the 15 coast was in sight.

　　It was getting dark. A sound could be heard over the 16 ; hundreds of car horns (喇叭) were cheering her on. With the remaining 17 , she finished the last 200 yards. At 18 p.m., Trudy got out of water. She had swum some 35 miles in 19 the 21-mile-wide Channel, 20 a strong storm. But she had made it in 14 hours and 30 minutes.

　　“Well, Pop,” she said to her father,“I guess I get my car this time, don't I?”

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It is completely 1 to take a gift when you are invited to dinner, but if you want to do so it should be a small, 2 thing. You 3 bring some sweets, or some small toys for the child, or 4 from China. Here are some suggestions; a papercut is a 5 gift (one is fine, not a whole package); if you want to make it 6 different, you can buy a very inexpensive frame (框子) in the local 7 and frame it. Chinese tea is a wonderful gift. It's true 8 Chinese tea is available in the United States, but the 9 that you chose it and brought it with you from China makes it very special. Chinese book marks are very wonderful 10 too, and if you want to buy a set of 11 paintings which you like, you might give one of them as a gift. One of the 12 things you can do is to cook a Chinese dish and 13 it with you. Again, 14 , a gift is not necessary and if you come 15 a group of students, one small token (象征性的) gift is entirely satisfactory. If you 16 ten yuan on something, that's an expensive gift to you. But it's not 17 to most of the Americans we meet. 18 is to bring a nice “token” gift that says “ 19 ”, not a gift that says “ 20 , how much money I spent.”

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　　A slave named Androcles once escaped from his master and fled to the forest. As he was wandering about there came upon a lion 1 down mourning(呻吟). At first he turned to flee, but finding that lion did not 2 after him, he turned back and went up to him. As he came near, the lion put out his paw, 3 was all swollen (肿大) and bleeding, and Androcles found that a huge thorn (刺) 4 into it, and was causing the pain. He 5 out the thorn and 6 after the paw of the lion, who was 7 able to rise and lick the hand of Androcles 8 a dog. Then the lion took Androcles to his 9 , and every day used to 10 him meat by which to live in. 11 shortly afterwards both Androcles and the lion were caught. The slave was sentenced 12 to the lion, which had been kept 13 food several days. The Emperor and 14 his court came to see Androcles and he was let out into the 15 of the spot. Soon the lion was let loose 16 his cage and rushed towards his victim (牺牲品). But as soon as he came to Androcles, he 17 his friend. The lion swung its tail upon him and licked his hands like a friendly dog. The Emperor, 18 at this, summoned Androcles to him, who told him the whole 19 . So the slave was pardoned and 20 , and the lion let loose to his native forest.

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　　As the Chinese saying goes, each family has its own trouble. But I want to say that some troubles are 1 .

　　My mother is now 84 years old. She can't read or write, nor can she understand Putonghua. What's 2 , she is hard of hearing. 3 she came to live with us from our hometown, our two children gave her new 4 in life and kept her 5 for several years. When the children grew up, she still kept 6 in housework, shopping, and cooking every day.

　　 7 she was getting old, we asked her to keep 8 the road and not go shopping, cook 9 wash clothes. The more she 10 , the more we worried for her. But she never 11 . Now every day at work, I 12 my mother when I have a 13 moments. What is she doing now, I 14 . The modern kitchen appliances (厨房用具) have trained a good 15 into a forgetful cook. She forgets to 16 the gas and we'll smell rice 17 before we enter our home. Rushing into the kitchen, we'll see the 18 pot smoking on the stove. We have asked her not to do housewerk, but she says we don't 19 her any more and cries and refuses to eat. Then we 20 her as if we were treating a child.

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　　Can you imagine what life would be like if there is no telephone? You could not call your friends 1 the phone and talk to them. If fire 2 out in your house, you could not 3 the fire department. If somebody were 4 , you could not call a doctor.

　　In our 5 life, we need to communicate with one another. We do this 6 by speaking to other people and listening to 7 they have to say to us, and as we are 8 to them we can do this very 9 . However, our voices will not travel very far even when we 10 . It is thanks to the 11 of the telephone that we are 12 able to communicate with each other 13 hold conversations when we are far 14 . We can hear each other clearly 15 we were in the same room.

　　The man who 16 this possible was Alexander Graham Bell, a Scotsman. Bell, a teacher of visible speech 17 later moved to Canada, 18 all his spare time experimenting. He was 19 active in his research for a means of sending speech by electricity that he left 20 time for his day-to-day work and at one time was almost penniless.

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　　England has an area of 50,335 square miles 1 a little more than that of the state of New York. In this 2 land live over 55,000,000 3 .

　　It may be 4 into two general regions: Highland England and Lowland 5 . An imaginary line 6 from the mouth of the Rees River in the northeast to the mouth of the Exe River in the southwest divides the regions. Highland England 7 to the north and west of the 8 .

　　England has many 9 , but 10 England is 11 small none of 12 are very long 13 very wide. The best-known 14 river is the Thames, which flows eastward 15 London to the sea.

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　　When you arrive in the UK at one of the major international airports (e. g. Heathrow or Gatwick) or one of the big regional airports (e. g. Manchester or Glasgow), you need to follow 1 to find your way out.

　　First of all, you will have to show your 2 to an immigration officer and you will be asked 3 you are coming to the UK, and whether you have enough money to 4 the cost of your stay. Sometimes, you have to 5 it with a bank 6 or sponsor's (资助者) letter. You should be 7 to answer questions about 8 and your intentions during your stay in the 9 .

　　When the immigration officer has 10 your documents and is certain that you are a 11 student, you will get a 12 in your passport 13 how long you can stay.

　　After 14 immigration control you will be able to 15 your baggage on one of the carousels (传送带) in the baggage-collect 16 . When you have found all your luggage, you must go through 17 control. If you have 18 to declare (申报), you can get out from the 19 channel. If you do have something to declare, join the 20 for the red channel.

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