1、大学英语六级 83 及答案解析(总分：448.03，做题时间：132 分钟)一、Part I Writing (3(总题数：1，分数：30.00)1.For this part, you are allowed thirty minutes to write a composition on the topic Reading Selectively Or Extensively? You should write at least 150 words, and base your composition on the outline (given in Chinese) below: 1有人
2、认为读书要有选择 2有人认为应当博览辟书 3我的看法 （分数：30.00）_二、Part II Reading C(总题数：1，分数：71.00)Using Land Wisely A very important world problemin fact, I am inclined to say it is the most important of all the great world problems which face US at the present timeis the rapidly increasing pressure of population on land an
3、d on land resources. It is not so much the actual population of the world but its rate of increase which is important. It works out to be about 1. 6 per cent per annual net increase. In terms of numbers this means something like forty to fifty-five million additional people every year. Canada has a
4、population of twenty million-rather less than six months climb in world population. Take Australia. There are ten million people in Australia. So, it takes the world less than three months to add to itself a population. Let the US take our own crowded country -England and Wales: forty -five to fifty
5、 million peoplejust about a years supply. By this time tomorrow, and every day, there will be added to the earth about 120,000 extra people -just about the population of the city of York. I am not talking about birth rate. This is net increase. To give you some idea of birth rate, look at the second
6、 hand of your watch. Every second three babies are born somewhere in the world. Another baby! Another baby! Another baby! You cannot speak quickly enough to keep pace with the birth rate. This enormous increase of population will create immense problems. By A. D. 2000, unless something desperate hap
7、pens, there will be as many as 7,000,000,000 people on the surface of this earth! So this is a problem which you are going to see in your lifetime. Why is this enormous increase in population taking place? It is really due to the spread of the knowledge and the practice of what is coming to be calle
8、d Death Control. You have heard of Birth Control? Death Control is something rather different. Death Control recognizes the work of the doctors and the nurses and the hospitals and the health services in keeping alive people who, a few years ago, would have died of some of the incredibly serious kil
9、ling diseases, as they used to be. Squalid conditions, which we can remedy by an improved standard of living, caused a lot of disease and dirt. Medical examinations at school catch diseases early and ensure healthier school children. Scientists are at work stamping out malaria and other more deadly
10、diseases. If you are seriously ill there is an ambulance to take you to a modem hospital. Medical care helps to keep people alive longer. We used to think seventy was a good age; now eighty, ninety, it may be, are coming to be recognized as a normal age for human beings. People are living longer bec
11、ause of this Death Control, and fewer children are dying, so the population of the world is shooting up. Imagine the position if you and I and everyone else living on earth shared the surface between us. How much should we have each? It would be just over twelve acres-the sort of size of a small hol
12、ding. But not all that is useful land which is going to produce food. We can cut out one-fifth of it, for example, as being too cold. That is land which is covered with ice and snowAntarctica and Greenland and the great frozen areas of northern Canada. Then we can cut out another fifth as being too
13、drythe great deserts of the world like the Sahara and the heart of Australia and other areas where there is no known water supply to feed crops and so to produce food. Then we can cut out another fifth as being too mountainous or with too great an elevation above sea level. Then we can cut out anoth
14、er tenth as land which has insufficient soil, probably just rock at the surface. Now, out of the twelve acres only about four are left as suitable for producing food. But not all that is used. It includes land with enough soil and enough rainfall or water, and enough heat which, at present, we are n
15、ot using, such as, for example, the great Amazon forests and the Congo forest and the grasslands of Africa. How much are we actually using? Only a little over one acre is what is required to support one human being on an average at the present time. Now we come to the next point, and that is, the ha
16、ves and the have-nots amongst the countries of the world. The standard share per person for the world is a little over twelve acres per head; potentially usable, about four acres; and actually used about 1.1 acre. We are very often told in Britain to take the United States as an example of what is d
17、one or what might be done. Every little American is born into this world with a heritage of the home country, the continental United States, of just, about the world average about twelve acres. We can estimate that probably some six acres of the total of twelve of the American homeland is cultivable
18、 in the sense I have just given you. But the amount actually usedwhat the Americans call “improved land“ in crops and pasture on farmsis three and a half acres. So the Americans have over three times the world average of land on which to produce food for themselves. On that land they produce more fo
19、od than they actually require, so they have a surplus for export. Now suppose we take the United States great neighbour, Canada, to the north. Every Canadian has 140 acres to roam around in. A lot of it is away in the frozen north, but there is still an enormous area of land in Canada waiting to be
20、settled and developed. The official figure is twenty-two acres. The Canadians use at the moment four acres, and they too have a large food surplus available for export. Now turn to our own country. Including land of all sorts, there is just over one acre per head in the United Kingdom of Great Brita
21、in and Northern Ireland. That is why we have to be so very careful with it. How much do we actually use? Just over half an acre to produce food-that is as farm land. The story is much the same if you separate off Northern Ireland and Scotland and just take England and Wales. In this very crowded cou
22、ntry, we have only 0.8 acres per head of land of all sorts to do everything with which we need. That is why we have to think so very carefully of this problem. India, with 2.5 acres per head, has considerably more land than we have in this country. Not all of it is usable for food production. But th
23、ere is land which could be reclaimed by modern methods, that is being tackled at the present time. The crucial figure is the actual area in agricultural usethree-quarters of an acre! The yields from this land are low, methods of production are primitive, and that is why the Indians are so very near
24、the starvation level for almost every year of their lives. But they are not as badly off where land is concerned as Japan. The Japanese figures are the same as our own country in overall land1.1 acres per personbut it is a very mountainous country with volcanoes, and so much less is cultivable. Less
25、 than a fifth of an acre 0.17 of an acre-is under cultivation. You see at once the tremendous land problem which there is in Japan. There is a great variation, of course, in the intensity with which land is used. In the United States they are extravagant in the use of land and take, perhaps, twenty
26、times as much to feed one person as in Japan. You may talk about the Japanese agriculture being twenty times as efficient as the American, but that raises a lot of questions. The intensive cultivation characteristic of Japan uses every little bit of land and only the barren hillsides are not require
27、d. Much of the agriculture is based on rice. The farm workers plant by hand every individual rice plant, and this kind of intensive cultivation enables the Japanese to support seven persons per acre. By contrast, think of the ranch lands in North and South America, with animals ranging over immense
28、tracts of land. A diet of beef and of milk is extravagant of land; in other words, it takes a lot of land for the number of calories produced. In this sense it is less efficient than the Japanese rice-growing agriculture. But not everyone likes eating rice. Where the sea is concerned, we are scarcel
29、y, at the present time, out of the old Stone Age. In the Stone Age, the people simply went out, killed wild animals-if they were lucky-and had a good meal; if they were unlucky they just went hungry. At the present day, we do almost the same thing in the sea, hunting wild fish from boats. In the fut
30、ure, perhaps, we shall cultivate the sea: we shall grow small fish and fish spawn in tanks, take them to the part of the ocean where we want them, let them grow to the right size, and harvest them. This is not fantasy, because, at the present time, fish are being cultivated like that in ponds and ta
31、nks in India, and various parts of the Far East so that the people there have a supply of protein. There is a great development possible. A lot of things are going to happen in the next fifty years. It is enormously important to increase the yield of grain plants and a great deal has happened throug
32、h the work of the geneticists in the last few years. For instance, there has been an enormous world increase in the production of what Americans call corn (maize to us) due to the development of new strains. Throughout agriculture geneticists are improving plants to get higher yields. （分数：71.00）(1).
33、The problem of population is mainly man-made.（分数：7.10）A.YB.NC.NG(2).Two different points are made in the essay about the efficient use of land, one of them is that some countries use old-fashioned methods of cultivation and therefore get a low yield, the other point is the certain kinds of food requ
34、ire more land than others.（分数：7.10）A.YB.NC.NG(3).It is very important the actual population in the world is on the increase.（分数：7.10）A.YB.NC.NG(4).By “Death Control“, the author means control of the worlds population.（分数：7.10）A.YB.NC.NG(5).There will be 1 born in a minute in the world.（分数：7.10）填空项 1
35、:_(6).We are living on earth shared the surface between us; it would be just over 1 acres.（分数：7.10）填空项 1:_(7).The enormous increase in population is really due to the spread of the knowledge and the practice of what is coming to be called 1.（分数：7.10）填空项 1:_(8).It works out to be about 1 annual net i
36、ncrease.（分数：7.10）填空项 1:_(9).Now, for human beings, eighty, ninety are coming to be recognized as 1.（分数：7.10）填空项 1:_(10).Every Canadian uses 1 acre(s) at present.（分数：7.10）填空项 1:_三、Listening Comprehens(总题数：1，分数：15.00)A.Tim will surely come to repair the walkman.B.Tim is very trustworthy.C.Tim cannot r
37、epair the walkman.D.Tim doesnt keep his word.A.She wants a copy of the article.B.She doesnt want the copy because it costs too much.C.The article is much too difficult to understand.D.It doesnt matter to her.A.The man doesnt have to study a foreign language.B.The man just passed the foreign language
38、 test.C.The mans advisor gave him some good advice.D.The man doesnt have to take the final exam.A.The man would understand if he had Peters job.B.Peter could help him get a job on an airplane.C.Waiting on tables is an enjoyable job.D.She is tired of waiting for him there.A.Mark is going to Spain.B.M
39、ark has traveled all over the world.C.Mark has the habit of collecting postcards.D.Mark is going on vacation.A.They cost her lots of money.B.They are very rewarding.C.They are very easy to learn.D.They are given by a strict teacher.A.The admission of a patient.B.Diagnosis of an illness.C.The old man
40、s serious condition.D.Sending for a doctor.A.The man is a football fan.B.The man needs the womans help.C.The man didnt watch TV last night.D.The man often has power failure at home.四、Section A(总题数：2，分数：10.00)A.They dont get rid of flabby arms.B.They can damage arm muscles.C.They arent acceptable to
41、most people.D.They can raise ones blood pressure.A.By talking to an expert.B.By attending an exercise class.C.By reading an article.D.By listening to the radio.A.Exercising the entire body.B.Having your blood pressure taken daily.C.Losing weight prior to exercising.D.Weighing in before each exercise
42、 session.A.Wearing arm weights while you are swimming.B.Jogging vigorously in one place for a long time.C.Using bicycles that require you to use both your arms and legs.D.Walking slowly while swinging your arms back and forth.A.Two different types of bones in the human body.B.How bones help the body
43、 move.C.How bones continuously repair themselves.D.The chemical composition of human bones.A.They defend the bone against viruses.B.They prevent oxygen from entering the bone.C.They break down bone tissue.D.They connect the bone to muscle tissue.A.They have difficulty identifying these cells.B.They
44、arent sure how these cells work.C.Theyve learned how to reproduce these cells.D.Theyve found similar cells in other species.A.To learn how to prevent a bone disease.B.To understand differences between bone tissue and other tissue.C.To find out how specialized bone cells have evolved.D.To create arti
45、ficial bone tissue.五、Section B(总题数：3，分数：30.00)A.Experience in negotiating.B.A high level of intelligence.C.The time they spend on preparation.D.The amount of pay they receive.A.Study the case carefully beforehand.B.Stick to a set target.C.Appear friendly to the other party.D.Try to be flexible about
46、 their terms.A.Make sure there is no misunderstanding.B.Try to persuade by giving various reasons.C.Repeat the same reasons.D.Listen carefully and patiently to the other party.A.A victim.B.A police detective.C.A robber.D.A pet bird.A.She recognized the robbers.B.She knew the robbers names.C.She foun
47、d the stolen property.D.She reported the robbery.A.Two.B.Twenty-six.C.Twenty-eight.D.Thirty.A.Baby- the Parrot Detective.B.An Amazon Parrot.C.Rising Crime Rates in American Society.D.How to Protect Your House.A.An old custom.B.The height of chivalry.C.Medieval food.D.The way knights courted ladies.A
48、.A long poetry of Middle Ages.B.A medieval novel.C.A medieval document.D.An old medieval romance.A.It lasted until the Middle Ages.B.It lasted until the early 18th century.C.It lasted until the early 19th century.D.It lasted until the late 16th century.A.Few knights and ladies enjoyed the old custom
49、.B.Sharing the same plate with others is considered good manner today.C.The custom is followed today in some places.D.Customs change with time.六、Section C(总题数：1，分数：10.00)When you have a dog it is necessary to care for it very carefully. In return, you will be loved by your dog; the most important part of dog-care is (36) 1. Not only does the dog have
