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根据下列材料,请回答题Medical JournalsMedical journals are publications that report medical

根据下列材料,请回答题

Medical Journals

Medical journals are publications that report medical information to physicians and other health professionals.

In the past,these journals were available only in print.With the development of electronic publishing,many medical journals now have Web sites on the Internet,and some joumals are published only online.A few medical journals,like the Journal of the American Medical Association,are considered general medical journals because they cover many fields of medicine.Most medical journals are specialty journals that focus on a particular area of medicine.

Medical journals publish many types of articles.Research articles report the results of research studies on a range of topics varying from the basic mechanisms of diseases to clinical trials

that compare outcomes of different treatments.Review articles summarize and analyze the information available on a specific topic based on a careful search of the medical literature.Because the

results of individual research studies can be affected by many factors,combining results from different studies on the same topic can be helpful in reaching conclusions about the scientific evidence for preventing,diagnosing or treating a particular disease.Case conferences and case reports

may be published in medical journals to educate physicians about particular illnesses and how to treat them.Editorials in medical journals are short essays that express the views of the authors,of ten regarding a research or review article published in the same issue.Editorials provide a perspective on how the current article fits with other information on the same topic.Letters to the editor provide a way for readers of the medical journal to express comments,questions or criticisms

about articles published in that journal.

The main readers of medical journals are_____. 查看材料

A.the general public

B.health professionals

C.medical critics

D.news reporters

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更多“根据下列材料,请回答题Medical JournalsMed…”相关的问题
第1题
根据下列材料,请回答题First Self-contained Heart ImplantedA patient on the brink of death h

根据下列材料,请回答题

First Self-contained Heart Implanted

A patient on the brink of death has received the world"s first self-contained artificial heart a battery-powered device about the size of a softball that runs without the need for wires, tubes or hoses sticking out of the chest.

Two surgeons from the University of Louisville implanted the titanium and plastic pump during a seven-hour operation at Jewish Hospital Monday. The hospital said the patient was" awake and responsive" Tuesday and resting comfortably. It refused to release personal details.

The patient had been expected to die within a month without the operation, and doctors said they expected the artificial heart to extend the person"s life by only a month. But the device is considered a major step toward improving the patient"s quality of life.

The new pump, called A bioCor, is also a technological leap from the mechanical hearts used in the 1980s, which were attached by wires and tubes to bulky machinery outside the body. The most famous of those, the Jarvic-7, used air as a pumping device and was attached to an apparatus about the size of a washing machine.

"I think it"s potentially a major step forward in the artificial heart development," said Dr.David Faxon, president of the American Heart Association. However, he said the dream of an implantable, permanent artificial heart is not yet a reality," This is obviously an experimental device whose long-term success has to be demonstrated. " Only about half of the 4,200 Americans on a waiting list for donor hearts received them last year, and most of the rest died.

Some doctors, including Robert Higgins, chairman of cardiology at the Medical College of Virginia in Richmond, said artificial hearts are unlikely to replace donor hearts.

"A donor heart in a good transplant can last 15 to 30 years," he said. "It"s going to be hard to replace that with a machine. "

The AbilCor has a 2-pound pumping unit, and electronic controls that adjust the pumping speed based on the body"s needs. It is powered by a small battery pack worn outside the body that transmits current through the skin.

The pump of the first implanted self-contained heart was made of titanium and plastic. 查看材料

A.Right

B.Wrong

C.Not mentioned

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第2题
根据下列材料,请回答题Science and TechnologyThere is a difference between science and techn

根据下列材料,请回答题

Science and Technology

There is a difference between science and technology. _______(46) Science has to do with discovering the facts and relationships between observable phenomena in nature and with establishing theories that serve to organize these facts and relationships; technology has to do with tools, techniques, and procedures for applying the findings of science. _______ (47)

Progress in science excludes the human factor. Scientists, who seek to understand the universe and know the truth within the highest degree of accuracy and certainty, cannot pay attention to their own or other peoples likes or dislikes or to popular ideas about the fitness of things.

_______ (48) But even an unpleasant truth is more than likely to be useful; besides, we have the choice of refusing to believe it! But hardly so with technology; we do not have the choice of refusing to hear the sound produced by a supersonic (超音速的) aircraft flying overhead; we cannot refuse to breathe polluted air. _______ (49) The purpose of technology is to serve people-people in general, not merely some people; and future generations, not merely those who presently wish to gain advantage for themselves.

_______ (50) Many people blame technology itself for widespread pollution, resource depletion (枯竭) and even social decay in general——so much so that the promise of technology is "obscured". That promise is a cleaner and healthier world. If wise applications of science and technology do not lead to a better world, what else will?

回答(46)题 查看材料

A.Another distinction between science and technology has to do with the progress in each.

B.Unlike science, progress in technology must be measured in terms of the human factor.

C.What scientists discover may shock or anger people——as did Darwin"s theory of evolution.

D.Science and technology are different.

E.We are all familiar with the improper use of technology.

F.Science is a method of answering theoretical questions ; technology is a method of solving practical problems.

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第3题
根据下列材料,请回答题Hair CareWhether the hair is long or short,it must be regularly brush

根据下列材料,请回答题

Hair Care

Whether the hair is long or short,it must be regularly brushed and regularly washed.For greasy(油性的)hair,especially if the owner lives in a town。it may be necessary to wash the head every four to five days.Those with a dry hair can usually go a little longer,but this is a matter for the individual to decide.

As for style.this must be studied according to what is the latest fashion and also to suit the individual at different times of her life.If a woman is not able to go to hairdresser very often,it is important that she chooses a style. she can easily manage for herself,and this nearly always means

that the first cut must be very standard.The same applies to permanent waving(烫发).I think that this should be carried out three or four times a year,SO that the hair never gets out of hand.

One thing would be remembered though,that is,whatever you apply to the head can have some effect upon the skin and therefore anything strong should be used with care.Or you may use milder products.

Young people who has spots or skin troubles on their face should take particular care to en. sure that the hair is both clean and does not come into contact with the affected piece of skin.Hair is very difficult to keep completely clean and therefore anyone running their hands through their hair and afterwards touching their face,or letting their hair fall over their faces,might spread infection from one place to another.s

Good hair does a lot to the effect of a face,SO if you want to look charming,please start with your hair.

According to the text,the most basic thing to do in hair care isC. 查看材料

A.to go to hairdressers very often

B.to choose milder products for the hair

C.to wash and brush the hair regularly

D.to keep the hair away from the skin trouble

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第4题
根据下列材料,请回答题Electronic MailDuring the past few years, scientists all over the wor

根据下列材料,请回答题

Electronic Mail

During the past few years, scientists all over the world have suddenly found themselves productively engaged in task they once spent their lives avoiding——writing, any kind of writing, but particularly letter writing. Encouraged by electronic mail"s surprisingly high speed, convenience and economy, people who never before touched the stuff are regularly, skillfully, even cheerfully tapping out a great deal of correspondence.

Electronic networks, woven into the fabric of scientific communication these days, are the route to colleagues in distant countries, shared data, bulletin boards and electronic journals. Anyone with a personal computer, a modern and the software to link computers over telephone lines can sign on. An estimated five million scientists have done so with more joining every day, most of them communicating through a bundle of interconnected domestic and foreign routes known collectively as the Internet, or net.

E-mail is starting to edge out the fax, the telephone, overnight mail, and of course, land mail. It shrinks time and distance between scientific collaborators, in part because it is conveniently asynchronous (异步的(Writer can type while their colleagues across time zones sleep; their message will be waiting. ). If it is not yet speeding discoveries, it is certainly accelerating communication.

Jeremy Bernstein, the physicist and science writer, once called E-mail the physicist"s umbilical cord (脐带). Later other people, too, have been discovering its connective virtues. Physicists are using it; college students are using it; everybody is using it; and as a sign that it has come of age, the New Yorker has celebrated its liberating presence with a cartoon——an appreciative dog seated at a keyboard, saying happily, "On the Internet, nobody knows you"re a dog. "

The reasons given below about the popularity of E-mail can be found in the passage except_________ 查看材料

A.direct and reliable

B.time-saving in delivery

C.money-saving

D.available at any time

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第5题
根据下列材料,请回答题SleepSleep is part of a person’s daily activity cycle.There are sever

根据下列材料,请回答题

Sleep

Sleep is part of a person’s daily activity cycle.There are several different stages of sleep.And they too occur in cycles_____(46)When you first drift off into slumber,your eyes will roll about a bit,your temperature will drop slightly,your muscles will relax,and your breathing will slow and become quite regular.Your brain waves slow down a bit t00,with the alpha rhythm of rather fast waves predominating for the first few minutes_____ (47)For the next half hour or so,as you relax more and more,you will drift down through stage 2 and stage 3 sleep._____ (48)Then about 40 to 60 minutes after You lose consciousness you will have reached the deepest sleep of all.Your brain waves will show the large slow waves that are known as the delta rhythm.

This is stage 4 sleep.You do not remain at this deep fourth stage all night long.but instead about 80 minutes after you fall into slumber,your brain activity level will increase again slightly._____ (49)Your eyes will begin to dart around under your closed eyelids as if you were l00-king at something occurring in front of you _____ (50)It is during REM sleep period,your body will soon relax again,your breathing will grow slow and regular once more,and you will slip gently back from stage l to stage 4 sleep—only to rise once again to the surface of near consciousness some 80 minutes later.

回答(46)题 查看材料

A.The delta rhythm will disappear,to be replaced by the activity pattern of brain waves.

B.If you are an average sleeper,your sleep cycle is as follows.

C.In stage 4 sleep people tend to dream.

D.The lower your stage of sleep,the slower your brain waves will be.

E.This period of rapid eye movement lasts for some 8 to 1 5 minutes and is called REM sleep.

F.This is called stage l sleep.

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第6题
根据下列材料,请回答题Local Newspapers in Britain1 Britain has a large circulation (发行量)

根据下列材料,请回答题

Local Newspapers in Britain

1 Britain has a large circulation (发行量) of the national newspapers. The Daily Mirror and The Daily Express both sell about 4 million copies each day. On average, every family will buy one newspaper in the morning, and take two or three on Sundays.

2 Local newspapers are just as popular as the national ones in Britain. Local papers have a weekly circulation of 13 million. Nearly every town and country area has its own paper, and almost every local paper is financially holding its own. Many local newspapers are earning good profits.

3 Local newspapers have their special characteristics. They mainly satisfy interest in local events——births, weddings, deaths, council meetings, and sports. Editors often rely on a small staff of people who know the district well. Clubs and churches in the neighborhood regularly supply these papers with much local news. Local news does not get out of date as quickly as national

news. If there is no room for it in this week"s edition, a news item can be held over until the following week.

4 The editor of a local newspaper never forgets that the success of any newspaper depends on advertising. For this reason, he is keen to keep the good will of local businessmen. If the newspaper sells well with carefully chosen news items to attract local readers, the businessmen will be grateful to the paper for the opportunity of keeping their products in the public eye.

5 Local newspapers seldom comment on problems of national importance, and editol"s rarely take sides on political questions. But they can often provide service to the community in expressing public feeling on local issues. A newspaper can sometimes persuade the council to take action to improve transport, provide better shopping facilities, and preserve local monuments and places of interest.

Paragraph 2 ____________ 查看材料

A.Keeping Good Relations with Local Businessmen

B.Service Provided by Local Newspapers

C.Large Circulation of the National Newspapers

D.Special Features of Local Newspapers

E.Power of Local Newspapers

F.Popularity of local Newspapers

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第7题
根据下列材料,请回答题Please Fasten Your SeatbeltsSevere turbulence (潮流 can kill aircraft

根据下列材料,请回答题

Please Fasten Your Seatbelts

Severe turbulence (潮流 can kill aircraft passengers. Now, in test flights over the Rocky Mountains, NASA (美国航空航天局)engineers have successfully detected clear-air turbulence up to 10 seconds before an aircraft hits it.

Clear-air turbulence often catches pilots by surprise. Invisible to radar, it is difficult to fore- cast and can hurl (用力抛出去) passengers about the cabin. In December 1997, one passenger died and a hundred others were injured when unexpected rough air caused a United Airlines flight over the Pacific to drop 300 meters in a few seconds.

However, passengers can avoid serious injury by fastening their seatbelts. "It is the only antidote (对策)for this sort of thing," says Rod Bogue, project manager at NASA"s Dryden Flight Research Center in Edwards, California. The centre"s new turbulence detector is based on lidar, or laser radar. Laser pulses are sent ahead of the plane and these are then reflected back by particles in the air. The technique depends on the Doppler effect. The wavelength of the light shifts according to the speed at which the particles are approaching. In calm air, the speed equals the plane"s airspeed. But as the particles swirl (打漩) in rough air, their speed of approach increases or decreases rapidly. The rate of change in speed corresponds to the severity (激烈程度)of the turbulence.

In a series of tests that began last month, a research jet flew repeatedly into disturbed air over the mountain ridges (山脉) near Pueblo, Colorado. The lidar detector spotted turbulence between 3 and 8 kilometers ahead, and its forecasts of strength and duration corresponded closely with the turbulence that the plane encountered.

Bogue says that he had "a comfortable amount of time" to fasten his seatbelt. The researchers are planning to improve the lidar"s range with a more powerful beam. The system could be installed on commercial aircraft in the next few years.

What does "clear-air turbulence" in Paragraph 1 probably mean? 查看材料

A.A not very rough storm.

B.Unexpected disturbed air.

C.A kind of visible storm.

D.A storm over mountain ridges.

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第8题
根据下列材料,请回答题Messages from the Media1 The weather forecast,a story about the candi

根据下列材料,请回答题

Messages from the Media

1 The weather forecast,a story about the candidates in an election,and movie reviews are exam pies of messages from the media.A communication medium,of which the plural(复数的)form. is media,is a means of communicating a message.Examples of media are television,radi0,news.papers and books and the telephone.The media that can reach many people at once are called mass media.

2 It is not difficult to think of other messages we receive through the mass media.Every day we get hundreds of them.Think about advertisements,for example.We see and hear these messages almost everywhere we 90?Advertisements are important messages,even though they are sometime nnoying.They help US compare and evaluate Droducts.

3 Most of us get more information from the media than from the classroom.Think for a moment.About how You learn about local news and events.Do Y。u depend on other people or the media? What about international news? what is the most important source。Of information for you ?People who are asked this question usually answer,“Television”.

4 Think。fall the messages You received today.Perhaps you read a newspaper during breakfast, or maybe you read advertisements Off billboards(露天广告牌)on your way to sch001.Did voulis.ten t。a weather forecast or the sports news on the radio。this morning? Right n。w y。u are getting information through a very important medium of mass communication a book.

5 We use the information we get from radi0,television,newspapers,and other media make decisions and form. opinions.That is why the mass media are so important.Editorials and articles in newspapers help US decide how to vote,consumer reports on television help us decide how to

spend our money,and international news on the radio makes US think and form. opinions about

question of war and peace.

Paragraph 2 ___________ 查看材料

A.Importance of Classroom Learning.

B.Television A Rich Source of Information.

C.Advertisements as important Messages from the Mass Media.

D.Various Messages One May Receive Each Day.

E.Media Means to Communicate Messages

F.Importance of the Mass media.

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第9题
根据下列材料,请回答题A Very Slow RideThe surface of the earth may seem very stable to you.

根据下列材料,请回答题

A Very Slow Ride

The surface of the earth may seem very stable to you. But you might be amazed if you knew some of the things that are going on under that surface.

The earth has an outer shell of rigid pieces called tectonic plates (地壳构造板块). The plates include both ocean floor and dry land. Some have whole continents on top of them. The continents on top of the plates are just going along for a slow ride, moving only about four inches per year. But even this small movement causes three types of big interactions.

One type is ocean ridges. These ridges develop in places where two plates are moving away from each other. As the plates separate, hot magma(岩浆) flows up to fill the space. New crust(地壳) builds up on the plate boundaries and causes ocean ridges. These ridges form. long mountain ranges, which only rise above the ocean surface in a few places.

Another type of reaction——trenches——occurs between two plates that are moving toward each other. As the plates meet, one bends downward and plunges underneath the other. This forms deep ocean trenches. The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet. This is the lowest point on the ocean floor. If the leading edges of the two colliding plates carry continents, then the layers of rock in the overriding plate crumple(变皱) and fold. A plate that carried what is now India collided with the southern edge of the plate that carried Europe and most of Asia. This caused the Himalayas, the world"s highest mountains.

The third reaction is transform. faults(转换断层). These faults occur where two plates that are traveling in opposite directions slide past each other. Severe earthquakes can occur. The San Andreas Fault in California is a good example of this type of movement.

The word "stable" (paragraph 1 ) means 查看材料

A."a place for horses"

B."calm and easygoing"

C."steady or firm"

D."a collection of animals"

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第10题
根据下列材料,请回答题Scotland:A Land of WisdomIn the l740s,the famous French philosopher V

根据下列材料,请回答题

Scotland:A Land of Wisdom

In the l740s,the famous French philosopher Voltaire said“We look to Scotland for all our ideas of civilization.’’That’S not a bad advertisement for any country when it comes to attracting people to search for a first-class education.

According to the American author Arthur Herman,the Scots invented the modern world it self.He argues that Scottish thinkers and intellectuals worked out many of the most important ideas on which modern life depends——everything from the scientific method to market economics.Their ideas did not just spread among intellectuals,but to those people in business,government and the sciences who actually shaped the Western world.

It all started during the period that historians call the Scottish Enlightenment(启蒙运动),which is usually seen as taking place between the years l 740 and l 800.Before that,philosophy was mainly concerned with religion.For the thinkers of the Scottish Enlightenment,the proper study of humanity was mankind itself.

Their reasoning was practical.For the philosopher David Hume,humanity was the fight subject for philosophy because we can examine human behavior. and SO find real evidence of how people think and feel.And from that we can make judgments about the societies we live in and make

concrete suggestions about how they can be improved,for universal benefit.

Hume’s enquiry into the nature of knowledge laid the foundations for the scientific method the pursuit of truth through experiment.His friend and fellow resident of Edinburgh,Adam Smith,famously applied the study of mankind to the ways in which mankind does business.Trade,he argued,was a form. of information.In pursuing our own interests through trading in markets,we all come to benefit each Other.

Smith’s idea has dominated modern views of economics.It also has wide applications.He was one of the philosophers to point out that nations can become rich,free and powerful through peace,trade and invention.

Although the Scottish Enlightenment ended a long time ago,the ideas which evolved at that time still underpin(构成……的基础)our theories of human exchange and enquiry.It also exists in Scotland itself in an educational tradition that combines academic excellence with orientation(方向).

Scotland is the right place to receive a first.class education. 查看材料

A.Right

B.Wrong

C.Not mentioned

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