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Scattered through the seas of the world are billions of tons of small plants and animals called plankton. Most of these plants and animals are too small for the human eye to see. They drift about lazily with the currents, providing a basic food for many larger animals. Plankton has been described as the equivalent of the grasses that grow on the dry land continents, and the comparison is an appropriate one. In potential food value however, plankton far outweighs that of the land grasses. One scientist has estimated that while grasses of the world produce about 49 billion tons of valuable carbohydrates each year. The sea’s plankton generates more than twice as much.
　　Despite its enormous food potential, little effort was made until recently to farm plankton as we farm grasses on land. Now marine scientists have at last begun to study this possibility, especially as the sea’s resources loom even more important as a means of feeding an expanding world population.
　　No one yet has seriously suggested that “planktonburgers” may soon become popular around the world. As a possible farmed supplementary food source, however, plankton is gaining considerable interest among marine scientists.
　　One type of plankton that seems to have great harvest possibilities is a tiny shrimplike creature called krill. Growing to two or three inches long, krill provide the major food for the giant blue whale, the largest animal ever to inhabit the Earth. Realizing that this whale may grow 100 feet and weigh 150 tons at maturity, it is not surprising that each one devours more than one ton of krill daily.
　　Krill swim about just below the surface in huge schools sometimes miles wide, mainly in the cold Antarctic. Because of their pink color, they often appear as a solid reddish mass when viewed from a ship or from the air. Krill are very high in food value. A pound of these crustaceans contains about 460 calories—about the same as shrimp or lobster, to which they are related.
　　If the krill can feed such huge creatures as whales, many scientists reason, they must certainly be contenders as new food source for humans.
　　1.Which of the following best portrays the organization of the passage?
　　A.The author presents the advantages and disadvantages of plankton as a food source.
　　B.The author quotes public opinion to support the argument for farming plankton.
　　C.The author classifies the different food sources according to amount of carbohydrate.
　　D.The author makes a general statement about plankton as a food source and then moves to a specific example.
　　2.According to the passage, why is plankton regarded to be more valuable than land grasses?
　　A.It is easier to cultivate.
　　B.It produces more carbohydrates.
　　C.It does not require soil.
　　D.It is more palatable.
　　3.Why does the author mention “planktonburgers”?
　　A.To describe the appearance of one type of plankton.
　　B.To illustrate how much plankton a whale consumes.
　　C.To suggest plankton as a possible food sources.
　　D.To compare the food values of beef and plankton.
　　4.What is mentioned as one conspicuous feature of krill?
　　A.They are the smallest marine animals.
　　B.They are pink in color.
　　C.They are similar in size to lobsters.
　　D.They have grass like bodies.
　　5.The author mentions all of the following as reasons why plankton could be considered a human food source except that it is ___.
　　A.high in food value.
　　B.in abundant supply in the oceans.
　　C.an appropriate food for other animals.
　　D.free of chemicals and pollutants.
　　答案：DBCBD

In the last 12 years total employment in the United States grew faster than at any time in the peacetime history of any country – from 82 to 110 million between 1973 and 1985 – that is, by a full one third. The entire growth, however, was in manufacturing, and especially in no – blue-collar jobs…
　　This trend is the same in all developed countries, and is, indeed, even more pronounced in Japan. It is therefore highly probable that in 25 years developed countries such as the United States and Japan will employ no larger a proportion of the labor force I n manufacturing than developed countries now employ in farming – at most, 10 percent. Today the United States employs around 18 million people in blue-collar jobs in manufacturing industries. By 2010, the number is likely to be no more than 12 million. In some major industries the drop will be even sharper. It is quite unrealistic, for instance, to expect that the American automobile industry will employ more than one –third of its present blue-collar force 25 years hence, even though production might be 50 percent higher.
　　If a company, an industry or a country does not in the next quarter century sharply increase manufacturing production and at the same time sharply reduce the blue-collar work force, it cannot hope to remain competitive – or even to remain “developed.” The attempt to preserve such blue – collar jobs is actually a prescription for unemployment…
　　This is not a conclusion that American politicians, labor leaders or indeed the general public can easily understand or accept. What confuses the issue even more it that the United States is experiencing several separate and different shifts in the manufacturing economy. One is the acceleration of the substitution of knowledge and capital for manual labor. Where we spoke of mechanization a few decades ago, we now speak of “robotization “ or “automation.” This is actually more a change in terminology than a change in reality. When Henry Ford introduced the assembly line in 1909, he cut the number of man – hours required to produce a motor car by some 80 percent in two or three years –far more than anyone expects to result from even the most complete robotization. But there is no doubt that we are facing a new, sharp acceleration in the replacement of manual workers by machines –that is, by the products of knowledge.
　　1.According to the author, the shrinkage in the manufacturing labor force demonstrates______.
　　A.the degree to which a country’s production is robotized
　　B.a reduction in a country’s manufacturing industries
　　C.a worsening relationship between labor and management
　　D.the difference between a developed country and a developing country
　　2.According to the author, in coming 25years, a developed country or industry, in order t remain competitive, ought to ______.
　　A.reduce the percentage of the blue-collar work force
　　B.preserve blue – collar jobs for international competition
　　C.accelerate motor – can manufacturing in Henry Ford’s style
　　D.solve the problem of unemployment
　　3.American politicians and labor leaders tend to dislike_____.
　　A.confusion in manufacturing economy
　　B.an increase in blue – collar work force
　　C.internal competition in manufacturing production
　　D.a drop in the blue – collar job opportunities
　　4.The word “prescription” in “a prescription for unemployment” may be the equivalent to ______
　　A.something recommended as medical treatment
　　B.a way suggested to overcome some difficulty
　　C.some measures taken in advance
　　D.a device to dire
　　5.This passage may have been excepted from ________
　　A.a magazine about capital investment
　　B.an article on automation
　　C.a motor-car magazine
　　D.an article on global economy
　　答案：AADCD

What does the future hold for the problem of housing? A good deal depends, of course, on the meaning of “future”. If one is thinking in terms of science fiction and the space age, it is at least possible to assume that man will have solved such trivial and earthly problems as housing. Writers of science fiction, from H.G. Wells onwards, have had little to say on the subject. They have conveyed the suggestion that men will live in great comfort, with every conceivable apparatus to make life smooth, healthy and easy, if not happy. But they have not said what his house will be made of. Perhaps some new building material, as yet unimagined, will have been discovered or invented at least. One may be certain that bricks and mortar(泥灰，灰浆) will long have gone out of fashion.
　　But the problems of the next generation or two can more readily be imagined. Scientists have already pointed out that unless something is done either to restrict the world’s rapid growth in population or to discover and develop new sources of food (or both), millions of people will be dying of starvation or at the best suffering from underfeeding before this century is out. But nobody has yet worked out any plan for housing these growing populations. Admittedly the worst situations will occur in the hottest parts of the world, where housing can be light structure or in backward areas where standards are traditionally low. But even the minimum shelter requires materials of some kind and in the teeming, bulging towns the low-standard “housing” of flattened petrol cans and dirty canvas is far more wasteful of ground space than can be tolerated.
　　Since the war, Hong Kong has suffered the kind of crisis which is likely to arise in many other places during the next generation. Literally millions of refugees arrived to swell the already growing population and emergency steps had to be taken rapidly to prevent squalor(肮脏)and disease and the spread crime. The city is tackling the situation energetically and enormous blocks of tenements(贫民住宅)are rising at an astonishing aped. But Hong Kong is only one small part of what will certainly become a vast problem and not merely a housing problem, because when population grows at this rate there are accompanying problems of education, transport, hospital services, drainage, water supply and so on. Not every area may give the same resources as Hong Kong to draw upon and the search for quicker and cheaper methods of construction must never cease.
　　1.What is the author’s opinion of housing problems in the first paragraph?
　　A.They may be completely solved at sometime in the future.
　　B.They are unimportant and easily dealt with.
　　C.They will not be solved until a new building material has been discovered.
　　D.They have been dealt with in specific detail in books describing the future.
　　2.The writer is sure that in the distant future ___.
　　A.bricks and mortar will be replaced by some other building material.
　　B.a new building material will have been invented.
　　C.bricks and mortar will not be used by people who want their house to be fashionable.
　　D.a new way of using bricks and mortar will have been discovered.
　　3.The writer believes that the biggest problem likely to confront the world before the end of the century ___.
　　A.is difficult to foresee.
　　B.will be how to feed the ever growing population.
　　C.will be how to provide enough houses in the hottest parts of the world.
　　D.is the question of finding enough ground space.
　　4.When the writer says that the worst situations will occur in the hottest parts of the world or in backward areas, he is referring to the fact that in these parts ___.
　　A.standards of building are low.
　　B.only minimum shelter will be possible.
　　C.there is not enough ground space.
　　D.the population growth will be the greatest.
　　5.Which of the following sentences best summarizes Paragraph 3?
　　A.Hong Kong has faced a serious crisis caused by millions of refugees.
　　B.Hong Kong has successfully dealt with the emergency caused by millions of refugees.
　　C.Hong Kong’s crisis was not only a matter of housing but included a number of other problems of population growth.
　　D.Many parts of the world may have to face the kind of problems encountered by Hong Kong and may find it much harder to deal with them.
　　答案：AABDD

Proxemics(空间关系学) is the study of what governs how closely one person stands to another. People who feel close will be close, though the actual distances will vary between cultures. For Amreicans we can discern four main categories of distance: intimate, personal, social and public. Intimate ranges from direct contact to about 45 centimeters. This is for the closest relationships such as those between husband and wife. Beyond this comes personal distance. This stands at between 45 and 80 centimeters. It is the most usual distance maintained for conversations between friends and relatives. Social distance covers people who work together or are meeting at social gatherings. Distances here tend to be kept between 1.30 to 2 meters. Beyond this comes public distance, such as that between a lecturer and his audience.
　　All cultures draw lines between what is an appropriate and what is an inappropriate social distance for different types of relationship. They differ, however, in where they draw these lines. Look at an international reception withrepresentatives from the US and Arabic countries conversing and you will see the Americans pirouetting(快速旋转) backwards around the hall pursued by their Arab partners. The Americans will be trying to keep the distance between themselves and their partners which they have grown used to regarding as “normal”. They probably will not even notice themselves trying to adjust the distance between themselves and their partners, though they may have vague feeling that their Arab neighbors are being a bit “pushy”. The Arab, on the other hand, coming from a culture where much closer distance is the norm, may be feeling that the Americans are being “stand-offish”. Finding themselves happier standing close to and even touching those they are in conversation with they will persistently pursue the Americans round the room trying to close the distance between them.
　　The appropriateness of physical contact varies between different cultures too. One study of the number of times people conversing in coffee shops over a one hour period showed the following interesting variations: London, 0; Florida, 2; Paris, 10; and Puerto Rico 180. Not only dose it vary between societies, however, it also varies between different subcultures within one society. Young people in Britain, for example, are more likely to touch and hug friends than are the older generation. This may be partly a matter of growing older, but it also reflects the fact that the older generation grew up at a time when touching was less common for all age groups. Forty years ago, for example, footballers would never hug and kiss one another on the field after a goal as they do today.
　　1.In proxemics, ____governs the standing space between two persons.
　　A. distance　 B. culture　　 C. conversation　　 D. relationship
　　2.The word “stand-offish”(Line 14, Para. 2) could best be replaced by_________.
　　A. cold and distant in behaviour 　 B. ungentlemanlike in behaviour C. inhuman in behaviour　　 D. polite in behaviour
　　3. In conversation with an American partner at an international reception, an Arab deems that close distant is _________.
　　A. appropriate　 B. inappropriate　　 C. rash　 D. impetuous
　　4. We can infer from the third paragragh that the approp