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阅读下面短文，从短文后所给各题的四个选项(A，B，C和D)中，选出可以填入空白处的最佳选项．

　　Plants are very important living things. Life could not go if there were no plants. This is because plants can make 1 from air, water and sunlight. Animal and man 2 make food from air, water or sunlight. Animals get their food by eating 3 and other animals. Man gets its food by eating plants and animals, too. Therefore animals and man need plants in order to 4 . This is 5 we find that there are so many plants 6 us.

　　If you look 7 at the plants around you, you will find that there are many 8 of plants. Some plants are large 9 others are small. 10 plants are green. There are two kinds of plants, flowering plants and non-flowering plants.

　　Flowering plants have roots, stem, leaves, flowers and fruits. Almost all the trees around us are 11 plants. You can probably 12 some plants from their flowers or their fruits.

　　Flowering plants 13 make seeds. The seeds are 14 by the fruits. Some fruits have one seed, some have two, three or four and some have many seeds. But a few fruits have 15 seeds at all. An example of a fruit 16 seeds is the banana fruit. Most non-flowering plants do not grow from seeds. They grow from spores(孢子). Spores are very, very 17 . Some spores are so small and light that they can 18 in the air. We may say that spores are quite 19 seeds. When these spores 20 on wet and shady(阴的) places, they usually grow into plants.

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　　Ecology(生态学) is a science of how living creatures and plants exist together and develop on each other and on the local government. Where an environment is undisturbed, the ecology of an area is 1 balance, but if a creature dies out or a new species(种类) is 2 then the ecology of an area will be upset, in other 3 , the balance. of nature will be 4 .

　　Man is a part of the 5 and has done more to upset the ecology during 6 short span of time on earth than 7 other creature . He has done this by his ignorance (无知) . his 8 , his thoughtless foolishness and his uncontrolled wastefulness. He has poisoned the 9 and polluted both land and water. He has wasted the earth's natural 10 , with no thought for the future, and has thought out the most devastating ways of killing his fellow men and every other sort of life at the same time.

　　Since man has done so much 11 , it is 12 to man to try to put matters 13 if it is not already too 14 . If there is to be any remedy(补救法) for our ills, that remedy ultimately lies in the hands of the 15 , and the sooner they start doing something about it, the 16 .

　　One of the main 17 of the earth's troubles is that the world is too crowded and that this overpopulation is growing at an ever-increasing rate. At the same time we are 18 up our natural resources — fuels and mineral ores — at an ever-increasing rate with no hope of replacing them.

　　For many years the earth has been unable to 19 enough food for these rapidly expanding population and the position has been steadily getting worse 20 some of our richest soils was lost and vast areas that were once fertile(富饶的) lands were turned into deserts.

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　　When Sir Winston Churchill, the great British Prime Minister, reached his eightieth birthday in November, 1954 , he was presented with his portrait by a well-known modern artist, Graham Sutherland. The painting had been ordered and paid for to 1 the Grand Old Man of World War.

　　Sir Winston and Lady Churchill were deeply moved by this 2 of respect and affection. 3 of them, of course, allowed the others to see how much they both disliked the portrait. “It makes me look 4 , which I am not! ” protested Churchill in private (私下) . 5 , he only remarked that it was “a fine example of modern art” . His friends smiled. It was well known that Churchill didn't 6 modern art.

　　Churchill was so unhappy about the portrait that finally his wife had it 7 . Churchill died at ninety in 1965. Lady Churchill 8 him in 1977. Shortly after her death, the public learned what had happened to the 9 , and a heated art broke out. The painter was 10 sad. The artist community, shocked and 11, said that the destruction of the picture had been a crime(罪行) . Historians said that they regretted the disappearance of a ( n ) 12 document . All agreed that the Churchills didn't have the 13 to do what they had done.

　　Graham Sutherland had told Churchill that he would 14 him “as he saw him” . Churchill never had a chance to see the work in 15 since the painter 16 to show it to him. He found out only 17 he received his present that Sutherland had seen him 18 a heavy, sick, tired old man. Since he hated old age, he was naturally 19 .

　　Who has the right to a work of art, the owner, the donor, or the artist who created it? Was the portrait a good one, as many (including the painter) said? Or was it bad as others thought? None of these questions have been answered yet to everybody's 20 .

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A．understandably

B．unexpectedly

C．unreasonably

D．unthinkingly

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　　Animals perform many useful and amusing jobs. Dogs are particularly valuable in guiding the blind, 1 property (财产) , finding 2 people, and hunting criminals(罪犯) . Horses are used in guarding herds (牧群) , carrying men in lands where there are no roads, and helping farmers work their land. Pigeons 3 to carry message. Wild animals from the jungles. fonts and seas are very popular performers in 4 and motion pictures(电影) . People realize that, 5 animals may not have the same intelligence as 6 , they are smart enough to learn certain things.

　　The first thing a dog is taught is to 7 . It should not 8 too long for him to learn commands. Simple orders, such as “sit, lie down, stay there, come here” , can 9 be taught by a child.

　　Training a dog to be a watchdog often produces unexpected results . Some dogs quickly learn the difference 10 unwanted people and friends. This is 11 their masters welcome friends and invite them into their houses. However, some dogs will always 12 the postman who comes to 13 letters. One explanation for this behavior is that, although the postman to the house often he never 14 the house. Therefore the dog thinks the postman is someone 15 is not wanted, but keeps 16 back anyway.

　　Dogs are extremely useful as 17 for blind people. When a dog has been properly trained, he will lead his blind master in the right direction and keep him 18 danger. For example, seeing-eye dogs 19 a busy road when cars are coming. 20 their masters command them to do so.

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　　When I come across a good article in reading newspapers, I often want to cut and keep it. But just as I am about to do so I find the article on the 1 side is as much interesting. It may be a discussion of the way to 2 in good health, or 3 about how to behave and conduct oneself in society. If I cut the front article, the opposite one is likely to 4 damage, leaving out half of it or keeping the text 5 the title. Therefore, the scissors(剪刀) would 6 before they start, 7 halfway done when I find out the 8 result.

　　Sometimes two things are to be done at the same time. both worth your 9 . You can only take up one of them, the other has to wait or be 10 up. But you know the future is unpredictable(不可预料) —the changed situation may not allow you to do what is left 11 .Thus you are 12 in a difficult position and feel sad. How 13 that nice chances and brilliant ideas should gather around all at once? It may happen that your life 14 greatly on your preference of one choice to the other.

　　In fact that is what 15 is like. We are often 16 with the two opposite sides of a thing which are both desirable like a newspaper cutting. It often occurs that our attention is drawn to one thing only 17 we get into another. The 18 may be more important than the latter and give rise to a divided mind. I 19 remember a philosopher's remarks: When one door shuts, another opens in life. So a casual(不经意) 20 may not be a had one .

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　　DC Hilton was one of the fist Amerircans to find out that there was money to be made in the middle of the night. 42 years ago he bought a small restaurant on US Highway 69, in Oklahoma. His main customers were truck drivers and 1 salesmen who drank coffee and ate cheeseburgers when they stopped to 2 their journey.

　　It was they who first tried to persuade Hilton to remain open all night. He thought about it for a while, and then suddenly made up his his mind. He took the door key and threw it across the road. He hasn't closed the door 3 .

　　Over the years his simple burger cafe has expended into a 24-hour roadside empire, with a 100-seat restaurant, a petrol station, a mini shopping market, a car park 4 mobile homes(活动住房) and all night self-help laundry(洗衣房) .

　　Hilton was a pioneer in a 24-hour 5 which has now caught on around the world. Today not only restaurants but also banks, supermarkets, mail-order firms, travel agencies and many other businesses are 6 to be open all night. 7 is this really a good thing?

　　A lot of research has been done in America on the effect of 24-hour working, and there is growing 8 about the long term dangers of a society that doesn't sleep. Americans are said to be sleeping 20% less than they did 100 years ago, and 55% claim to suffer at least occasionally from over-tiredness. 9 of the worst-made disasters hap pened in the last few hours before dawn. when even the mast experienced nightworker has difficulty 10 awake.

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　　Many People now think that teachers give pupils too much homework . They say that it is 1 for children to work at home in their spare time. 2 ,they argue that most teachers do not 3 plan the homework tasks they give to pupils. The result is that pupils have to 4 tasks which they have already done at school.

　　Recently in Greece many parents 5 about the difficult homework which teachers gave to their children. The parents said that most of the homework was a waste of time, and they wanted to 6 it. Spain and Turkey are two countries which stopped homework recently. In Denmark, Germany and several other countries in Europe, teachers cannot set homework at weekends. In Holland, teachers allow pupils to stay at school to do their homework. The children are free to help one another. Similar 7 also exists in some British schools.

　　Most people agree that homework is not 8 . A pupil who can do his homework in a quiet and 9 room is in a much better position than a pupil who does his homework in a small noisy room with the television on. Some parents help their children with their homework. Other parents take no 10 at all in their children's homework.

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　　April 17,2002 saw a strange thing that happened in a city. As a tap came near the corner, it stopped suddenly. The driver got out, looking very puzzled. A big lorry which had been 1 the taxi stopped, too. The taxi driver was now standing at the corner, looking up at the sky, and the lorry driver went to 2 him. A number of cars 3 were forced to stop 4 and soon a large crowd of people had 5 at the comer. The cause of all this 6 was a very strange noise. It 7 as if thousands and thousands of birds were singing 8 .The noise was quite 9 and many people looked disturbed. The most 10 thing was that, apart from one or two pigeons, there was not a bird in 11 . No one was able to find the answer to the mystery 12 two policemen arrived. They noticed a large advertisement 13 a film high up on a wall nearby. The noise seemed to be coming from this 14 . They climbed up and found that a tape recorder had been 15 behind the advertisement. The noise made by birds wag being broadcast over 16 loudspeakers so as to attract the attention of 17 . The police asked the 18 to take the record away because the advertisement had attracted so much attention that it was 19 for a great many cars and buses to move 20 in the street.

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　　From time to time I received PC magazines from well meaning editors. Reading them, I recognized the 1 characters, but the whole thing is Creek to me. When faced with such publications, I think to myself, “They might 2 send newspapers or magazines to a blind person. ”I 3 to say it, but I have to admit I don't 4 know how to type, much 5 how to enjoy the Internet. Several times I've tried to learn to use a computer and each time I gave up 6 , for it is not really very user-friendly. I was afraid of all mechanical 7 , afraid of the keyboard and the jumping mouse. I was content with the 8 that my classmate, Bai Yansong, another prime time host, also wrote his articles by 9 . He told me that feeling the 10 of the pen 11 the surface of the paper gave him a kind of 12 . I had the 13 feeling and found it a good excuse not to use a computer. By 1999, however, I 14 felt this attitude was right. One day I went to my supervisor's(导师) home to 15 an article that was hand-written and a little muddily done. Hearing my 16 , the wife of my supervisor said, “It doesn't matter. I can type it out on my computer. ” “You can use a computer?”

　　“Sure. I learned to use it when I was 70.”

　　I was so 17 that I wasn't able to cry out a single word. 18 out of their flat, I made up my mind for the one-hundredth time to start learning to use a computer. I still had Bai Yansong to 19 me company, but once he started learning to use the computer, he would 20 very fast and then I would be really alone, wouldn't I?

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5．Amore

B．faster

C．slowly

D．less

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　　While I was standing at the kitchen window, five-year-old Spencer, my oldest son, ran into the house 1 , “We need a doctor out here! We need a doctor! Hurry, Mom!” “What's wrong? ” I asked. Spencer anxiously told me he had found a dead bird that needed a doctor.

　　Dutifully(顺从地), I seized a small plastic bag from the cupboard and took Spencer's hand— 2 , that's the sort of thing mothers do! While my son led me out of the door and 3 the bird, I explained that if the creature was indeed dead, a doctor could not 4 .When we arrived at the 5 scene, it was obvious that the baby bird was dead . Spencer and I could see the nest high up in the tree . My son and I 6 the probable age of the baby bird, its inability to fly well, and exactly how the 7 had caused its death. “I think his mommy and daddy really 8 him.”Spencer observed. I 9 my boy's hand and tried to ease his 10 by saying I was sure they did, 11 they would be okay because the little bird had gone to Heaven to be with God and PoPo ( my grandfather who had died ) . I assured Spencer that the bird's mommy and daddy knew that their little one world be 12 and loved. I told Spencer that PoPo loved little birds, and that I 13 he was in Heaven holding and playing with the baby bird 14 . I picked up the little creature's body, slipped it into my plastic bag and 15 placed the bird in the rubbish bin. 16 was said about the matter for the rest of the day. Spencer went right back to play 17 he had never been interrupted, and I returned to my work in the kitchen.

　　At breakfast the next morning, Spencer sadly explained to his father that he had found a baby bird the day before that had fallen from its nest.

　　“It was deed, Daddy!”

　　Trying to 18 Spencer's spirits and remind him that the little bird was really 19 , I asked our son to tell Daddy 20 the baby bind was. Spencer, looking solemn faced at his dad, stated, “In the rubbish bin with Mama's granddad, PoPo.”

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