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[主观题]

Thousands of years ago man used handy rocks for his surgical operations. Later he used sha

rp bone or horn, metal knives and, more recently, rubber and plastic. And that was where we stuck, in surgical instrument terms, for many years. In the 1960s a new tool was developed, one which was, first of all, to be of great practical use to the armed forces and industry, but which was also, in time, to revolutionize the art and science of surgery.

The tool is the laser and it is, being used by more and more surgeons all over the world, for a very large number of different complaints. The word laser means: Light Amplification by Stimulated Emission of Radiation. As we all know, light is hot; any source of light--from the sun itself down to a humble match burning--will give warmth. But light is usually spread out over a wide area. The light in a laser beam, however, is concentrated. This means that a light with no more power than that produced by an ordinary electric light bulb becomes intensely strong as it is concentrated to a pinpoint-sized beam.

Experiments with these pinpoint beams have shown researchers that different energy sources produce beams that have a particular effect on certain living cells. It is possible for eye surgeons to operate on the back of the human eye without harming the front of the eye, simply by passing a laser beam right through the eyeball. No knives, no stitches, no unwanted damage--a true surgical wonder.

Operations which once left patients exhausted and in need of long periods of recovery time now leave them feeling relaxed and comfortable. So much more difficult operations can now be tried.

The rapid development of laser techniques in the past ten years has made it clear that the future is likely to be very exciting. Perhaps some cancers will be treated with laser in a way that makes surgery not only safer but more effective. Altogether, tomorrow may see more and more information coming to light on the diseases which can be treated medically.

We find that after the development of the laser in the 1960s, ______.

A．medical help became available to industrial workers

B．the study of surgical techniques went through a complete revolution

C．more and more surgeons began using surgical instruments

D．man's whole approach to surgery changed completely

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发布时间：2022-07-27

更多“Thousands of years ago man used handy rocks for his surgical operations. Later he used sha”相关的问题

第1题

Silk（)by Chinese for thousands of years now.A. has usedB. has been usedC. was usedD.

Silk()by Chinese for thousands of years now.

A. has used

B. has been used

C. was used

D. is used

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第2题

The study of thousands of samples from the sea occupied scientists for years and led

A.versions

B.volumes

C.editions

D.issues

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第3题

For thousands of years man dreamed （) seemed impossible dreams about flying.

A.what

B.that

C.which

D.why

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第4题

［A］ For example, the Moche lords of Sipán in coastal Peru were buried in about AD

400 in fine cotton dress and with exquisite ornaments of bead, gold, and silver. Few burials rival their lavish sepulchres. Being able to trace the development of such rituals over thousands of years has added to our understanding of the development of human intellect and spirit.

［B］ By 40,000 years ago people could be found hunting and gathering food across most of the regions of Africa. Populations in different regions employed various technological developments in adapting to their different environments and climates.

［C］ Archaeological studies have also provided much information about the people who first arrived in the Americas over 12,000 years ago.

［D］ The first fossil records of vascular plants—that is, land plants with tissue that carries food—appeared in the Silurian period. They were simple plants that had not developed separate stems and leaves.

［E］ Laetoli even reveals footprints of humans from 3.6 million years ago. Some sites also contain evidence of the earliest use of simple tools. Archaeologists have also recorded how primitive forms of humans spread out of Africa into Asia about 1.8 million years ago, then into Europe about 900,000 years ago.

［F］ One research project involves the study of garbage in present-day cities across the United States. This garbage is the modern equivalent of the remains found in the archaeological record. In the future, archaeologists will continue to move into new realms of study.

［G］ Other sites that represent great human achievement are as varied as the cliff dwellings of the ancient Anasazi (a group of early Native Americans of North America) at Mesa Verde, Colorado; the Inca city of Machu Picchu high in the Andes Mountains of Peru; and the mysterious, massive stone portrait heads of remote Easter Island in the Pacific.

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第5题

For thousands of years,people thought of glass as something beautiful to look at.Only

recently 21 come to think of it as something look through.Stores 22 their goods in large glass windows.Glass bottles and jars 23 food and drink allow us to see the contents.Glass 24 spectacles(眼镜),microscopes(显微镜),telescopes,and many other very useful and necessary objects,and glasses are used by people who cannot see 25 or by people who want to protect their eyes 26 bright light.Microscopes make tiny things larger 27 we can examine them.Telescopes make objects that are far away appear 28 closer to us.However in recent years plastics have replaced glass 29 conditions where glass might be easily broken.There are new uses being developed for glass that were never imagined in the past.Perhaps the greatest 30 of glass is that its constituent(形成的) parts are inexpensive and can be found all over the world.21.A.they B.do they C.they have D.have they

22.A.protect

B.hide

C.display

D.set aside

23.A.hold

B.held

C.that hold

D.that holding

24.A.used to make

B.is used to make

C.is used to making

D.used to making

25.A.perfectly

B.perfect

C.perfection

D.perfected

26.A.from

B.in

C.with

D.beyond

27.A.so as

B.as that

C.so that

D.such that

28.A.ever

B.rather

C.more

D.much

29.A.under

B.below

C.within

D.on

30.A.goodness

B.advance

C.advantage

D.progress

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第6题

All over the world men are【B1】new techniques to provide mass housing, inexpensively and qu

ickly, for millions of low-and middle-income families, and【B2】the urgent housing【B3】brought on by such natural disasters【B4】floods and earthquakes.

A firm in Hatfield, Pennsylvania, the Universal Papertech Corporation, believes it has found one solution【B5】the problem: houses【B6】paper. The ultimate success of the paper houses will【B7】a great deal on breaking【B8】traditional patterns and concepts of home building and restrictive codes. One thing seems certain,【B9】: the shelter revolution is already【B10】.

The concept of paper houses was developed【B11】10 years ago by Universal. Six years ago the company supplied【B12】the then—current models【B13】emergency housing for thousands of migratory farm workers in California.【B14】the houses were new on the market, no one really knew just how long the unusual structures would【B15】. Today, in California【B16】still holding up well under the elements and【B17】are accommodating more people than at first. The manufacture now【B18】that the houses will have a useful life of at least 15 to 20 years.【B19】in the paper houses has spread beyond the U.S.【B20】a number of foreign countries.

【B1】

A．searching

B．searching for

C．searching in

D．searching into

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第7题

Who will stage the games？Preparing for the Olympics Games is a huge undertaking.Just lik

Who will stage the games？

Preparing for the Olympics Games is a huge undertaking.Just like the athletes, the host city spends years getting ready for the event.Before deciding which city will host the Olympic Games, the International Olympic Committee (IOC)has to examine bids from all over the world.Bidding for the games begins about ten years in advance.Without preparing a very strong bid1, a city will not win the competition to host the games.Beijing was chosen for the 2008 games from five bidders — Osaka, Paris,Toronto and Istanbul.2

Why does it take so long to prepare？

Building the infrastructure costs huge amounts of money.Holding the World Cup in 2002 in Japan and South Korea, for example, meant that ten new stadiums had to be built, as well as many hotels and an improved transport system.In Beijing, after winning the bid the government began major construction projects — the extension of the underground, the improvement of the airport and the building of new motorways3.Each host city must also build an Olympic village for the athletes.By planting trees and creating parks, the city becomes more attractive for tourists.

Why do countries want to host the Olympic Games？

Hosting the games has a major effect on the economy and brings international prestige to the country.Thousands and thousands of visitors come to the games and the host cities are permanently improved.

1.Bidding for the Olympic Games usually starts before the games are really held.

A.two years

B.eight years

C.one year

D.ten years

2.Beijing was one of the ()bidders for the 2008games.

A.four

B.five

C.ten

D.three

3.The World Cup 2002 was held in().

A.Japan

B.South Korea

C.China

D.A and B

4.What construction projects did Beijing start after winning the bid？

A.The extension of the underground.

B.The improvement of the airport.

C.The building of new motorways

D.All of the above

5.Why do countries want to host the Olympic Games？

A.Because it has a major effect on the economy.

B.Because it brings international prestige to the country.

C.Because the host cities are permanently improved.

D.All of the above.

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第8题

Americans are getting ready for the biggest soccer event in the world. For the first t

ime the world cup soccer competition will be held in the United States. While millions play the game around the world, soccer or football has only recently become popular here. It is only in the last 30 years that large numbers of young Americans became interested in soccer. Now it is the fastest growing sport in the country. A recent study found that almost 18 million young boys and girls play soccer in the United States.

The study also found that soccer is beginning to replace more traditional games like American football as the most popular sport among students. And so, when the world cup begins next week, more than one million Americans are expected to go and see the teams play. Organizers say this year’s world cup will be the biggest ever. All the seats at most of the 52 games have already been sold.

Soccer has been played in the United States for a little more than one hundred years. But how did the sport come to this country？ And how long has it existed in other parts of the world？ No one knows exactly where the idea for soccer came from, or when people began playing the game. Some scientists say there is evidence that ball games using the feet were played thousands of years ago. There is evidence that ancient Greeks and Romans and native American Indians all played games similar to soccer.

Most experts agree that Britain is the birthplace of modem soccer. They also agree that the British spread the game around the world. Unlike the game today, which uses balls of man-made material or leather, early soccer balls were often made of animal stomachs. The rules of early soccer games also differed from those we have today.

1.Which of the following statements is NOT true according to the text？()

A.Americans were preparing for the world cup when the author wrote this article

B.More younger Americans became interested in soccer in the last 30 years

C.Soccer is the fastest developing sport in the world

D.The article was written before the world cup held in the United States

2.Which was the most popular sport as a traditional game among students？()

A.Basketball

B.American football

C.Soccer

D.Tennis

3.For how long has soccer been played in the United States？()

A.About a hundred years

B.About fifty years

C.Only recently

D.About thirty years

4.What is the author going to state in the next paragraph？()

A.There have been attempts to start a professional soccer organization in the U.S

B.In the 12th century soccer games in Britain often involved whole towns

C.Professional soccer grew quickly in Europe

D.Experts believed that the United States would win

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第9题

The part of the environmental movement that draws my firm's attention is the design of cit

ies, buildings and products. When we designed America's first so-called“green” office building in New York two decades【C1】______, we felt very alone. But today, thousands of people come to green building conferences, and the【C2】______that buildings can be good for people and the environment will be increasingly influential in years to【C3】______

Back in 1984 we discovered that most manufactured products for decoration weren't designed for【C4】______use. The“energy- efficient”sealed commercial buildings constructed after the 1970s energy crisis【C5】______indoor air quality problems caused by materials such as paint, wall covering and carpet. So for 20 years, we've been focusing on these materials【C6】______to the molecules, looking for ways to make them【C7】______for people and the planet.

Home builders can now use materials- such as paints that release significantly【C8】______amounts of organic compounds-that don't【C9】______the quality of the air, water, or soil. Ultimately,【C10】______, our basic design strategy is focused not simply on being “less bad” but on creating【C11】______healthful materials that can be either safely returned to the soil【C12】______reused by industry again and again. As a matter of【C13】______, the world's largest carpet manufacturer has already【C14】______a carpet that is fully and safely recyclable(可循环利用).

Look at it this way: No one【C15】______out to create a building that destroys the planet. But our current industrial systems are【C16】______causing these conditions, whether we like it or not. So【C17】______of simply trying to reduce the damage, we are【C18】______a positive approach. We're giving people high-quality, healthful products and an opportunity to make choices that have a【C19】______effect on the world.

It's not just the building industry, either.【C20】______cities are taking these environmentally positive approaches to design, planning and building. Portland, Seattle and Boston have said they want to be green cities. Chicago wants to be the greenest city in the world.

【C1】

A．off

B．away

C．before

D．ago

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第10题

（非英语专业做）Increasingly over the past 10 years, People especially young people have bec

（非英语专业做）

Increasingly over the past 10 years, People especially young people have become aware of the need to change their eating habits, because much of the food they eat, particularly processed foods, is not good for health. Consequently, there has been a growing interest in natural foods: foods which do not contain chemical additives and which have not been affected by chemical fertilizers widely used in farming today.

Natural foods, for example, include vegetables, fruit and grain which have been grown in soil that is rich in organic matter. In simple terms, this means that the soil has been nourished by unused vegetable matter, which provides it with essential vitamins and minerals. This in itself is a natural process compared with the use of chemicals and fertilizers, the main purpose of which is to increase the amount but not the quality of foods grown in commercial farming areas.

Natural foods also include animals which have been allowed to feed and move freely in healthy pastures. Compare this with what happens in the mass production of poultry: There are battery farms, for example, where thousands of chickens live crowded together in one building and are fed on food which is little better than rubbish. Chickens kept in this way are not only tasteless as food; they also produce eggs which lack important vitamins.

It is significant that nowadays fiber is considered to be an important part of a healthy diet. In white bread, for example, the fiber has been removed. But it is present in unrefined flour and of course in vegetables. It is interesting to note that in countries where the national diet contains large quantities of unrefined flour and vegetables, certain diseases are comparatively rare. Hence the emphasis placed on the eating of whole meal bread and more vegetables by modern experts on "healthy eating".

People have become more interested in natural foods because______.

A．they like changing their diet from time to time

B．they want to eat food that is more delicious

C．much of the food they eat is no longer considered to be healthy

D．they want to be fashionable

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第11题

Each year, hundreds of thousands of people die from heart attack, a leading cause of death

. In the Landmark Physicians' Health Study at Harvard University in the United States in the late 1980s, a research team led by Dr. Hennekens studied 22, 701 healthy male physicians, half of whom were randomly【1】to take an aspirin every other day while the others took placebos(安慰剂). After the participants had been【2】for an average of five years, the doctors in the aspirin group were found to have suffered 44 percent fewer first heart attacks.【3】, a recent international study indicates that aspirin can be beneficial for those people with a history of coronary artery(冠动脉) bypass surgery,【4】of their sex, age or whether they have high blood pressure or diabetes.

According to a report by the American Heart Association, doctors should consider prescribing【5】aspirin for middle-aged people with a family history of, or【6】for, heart disease. (Risk factors include smoking, being more than 20 percent overweight, high blood pressure and lack of exercise. )

Aspirin is also a lifesaver during heart attacks. Paramedics now give it routinely, and experts urge anyone with chest pain,【7】if it spreads to the neck, shoulder or an arm, or is accompanied by sweating, nausea (恶心), lightheadedness and breathing difficulty to chew and【8】an aspirin tablet immediately.

When taking aspirin for heart attack,【9】the plain, uncoated variety. For even faster absorption, crush and mix with a little water. Speed of absorption is critical because most heart attack deaths occur【10】the first few hours after chest pain strikes.

(1)

A．expected

B．demanded

C．assigned

D．advised

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