The human body has developed its millions of nerves to be highly aware of what goes on both inside and outside of it. This helps us aajust to the outside world. Without our nerves and our brain, which

A.love and hatred

B.body and spirit

C.sin and evil

D.time and space

A.普通x线 Radiography

B.CT

C.DSA

D.MRI

tal (至关重要的) to healthy living.

A.efficient

B.favorite

C.primary

D.current

A.普通x线 Radiography

B.CT

C.DSA

D.MRI

e in industrialized nations that they would be much healthier if they ate more of the same kind of food eaten by humans living more than 10,000 years ago.

The scientists say that the human body has changed very little since human first appeared on the earth, but the way we live has changed greatly.Our body has not been able to deal with these changes in life style. (方式) and this has led to new kinds of sicknesses.These new sicknesses were not known in ancient times (古代).So they are called “diseases of civilization”.Many cancers and diseases of the blood system (系统),including heart attacks and stroke (中风) are examples of such diseases.

Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol (酒精) or tobacco (烟草),probably none.Ancient people also got a great deal of physical exercise, but a change in food is one of the main differences between life in ancient times and that of today.

Stone-age people hunted wild animals for their meat, which had much less fat than domestic or tame ones (家畜).They also ate a lot of fresh wild vegetables and fruits.They did not have milk or any other dairy products, and they made very little use of grains.But today, we eat a large amount of these.We eat six times more salt than our remote ancestors.We eat more sugar.We eat twice as much fat but only one third as much protein (蛋白质) and much less vitamin.(维生素) C.

People today probably do not want to live the way people thousands of years ago did, but scientists say that we would be much healthier if we ate much the same way our remote ancestors did ,cutting the amount of fatty, salty and sweet food.

1.According to the passage, people in industrialized nations would be much healthier if they eat()

A.more food as human living 10,000 years ago did

B.as human living 10,000 years ago ate

C.more kinds of food eaten by people living over 10,000 years ago

D.more of the same kind of food eaten by people over 10,000 years ago

2.New kinds of sicknesses have been found because().

A.the human body has changed compared with(同……比较) human first appeared on the earth

B.the way we live has changed a little

C.our body can't deal with the changes in life style

D.the way we live today is proper for the human body

3.What is the main cause that people suffer from a lot of new sicknesses？ ()

A.Ancient people did a great deal of physical exercise

B.People today have a lot of alcohol

C.People today have more tobacco

D.Food today is quite different from that of ancient times

4.Which of the following belongs to the dairy product？()

A.Milk

B.Corn

C.Pork

D.Flour

5.According to some scientists, Stone-age people were much healthier than people today because they ate a lot of ______.

A.milk and other dairy products

B.wild animals, fresh.wild vegetables and fruits

C.salt and sugar

D.grain foods

Researchers have found that REM(rapid eye movement)sleep is important to human beings. This type of sleep generally occurs four or five times during one night of sleep lasting five minutes to forty minutes for each occurrence. The deeper a persons sleep becomes, the longer the periods of rapid eye movement. There are physical changes in the body to show that a person has changed from NREM(non-rapid eye movement)to REM sleep. Breathing becomes faster, the heart rate increases, and, as the name implies, the eyes begin to move quickly. Accompanying these physical changes in the body there is a very important characteristic of REM sleep. It is during REM sleep that a person dreams.

According to the passage, how often does REM sleep occur in one night？

A．Once.

B．Twice.

C．Four or five times.

D．Forty times.

Questions are based on the following passage．

Every human being, no matter what he is doing, gives off body heat．The usual problem is how to dispose of it．But the designers of the Johnstown campus of the University of Pittsburgh set themselves the opposite problem--how to collect body heat．They have designed a collection system which utilizes not only body heat, but also the heat given off by such objects as light bulbs

and refrigerators as well．The system works so well that no conventional fuel is needed to make the campus's six buildings comfortable．

some parts of most modem buildings--theaters and offices as well as classrooms-are more than amply heated by people and lights and sometimes must be air-conditioned even in winter．The technique of saving heat and redistributing it is called"heat recovery．"A few modem buildings recover heat, but the University's system is the first to recover heat from some buildings and re-use it in others．

Along the way, Pitt has learned a great deal about some of its heat producers．The harder a student studies, the more heat his body gives off．(80) Male students emit more heat than female students do, and the larger a student is, the more heat he produces．It is tempting to conclude that the hottest prospect for the Johnstown campus would be a hardworking, overweight male genius．

Until recently， body heat has caused problems because it__________ 查看材料

A.was difficult to collect

B.came in a variety of forms

C.was difficult to get rid of

D.tended to be absorbed by physical objects

icial organs have entered everyday medicine, we seem to be on the verge of realization of the seventeenth century European view of the body as a machine. But if we seem to have realized that conception, it can also be argued that we have in a sense turned it inside out. In the seventeenth century machine imagery reinforced the notion of the human body as a totally determined mechanism whose basic functionings the human being is helpless to alter. The then—dominant metaphors for this body—locks, watches, collections of springs—imagined a system that is set, wound up, whether by nature or God the watchmaker, ticking away in a predictable, orderly manner, regulated by laws over which the human being has no control. Understanding the system, we can help it perform. efficiently and intervene when it malfunctions, but we cannot radically alter the configuration of things.

Western science and technology have now arrived, paradoxically but predictably (for it was a submerged, illicit element in the mechanistic conception all along), at a new, postmodern conception of human freedom from bodily determination. Gradually and surely, a technology that was first aimed at the replacement of malfunctioning parts has generated an industry and a value system fueled by fantasies of rearranging, transforming, and correcting, an ideology of limitless improvement and change, defying the historicity, the mortality, and indeed the very materiality of the body. In place of that materiality, we now have what I call "cultural plastic." In place of God the watchmaker, we now have ourselves, the master sculptors of that plastic.

"Create a masterpiece: sculpt your body into a work of art," urges Fit magazine. "You visualize what you want to look like, and then you create that form." The precision technology of body sculpting, once the secret of the Arnold Schwarzeneggers and Rachel McLishes of the professional bodybuilding world, has now become available to anyone who can afford the price of membership in a health club. On the medical front, plastic surgery, whose repeated and purely cosmetic employment has been legitimated by popular music and film personalities, has become a fabulously expanding industry, extending its domain from nose jobs, face lifts, and tummy tucks to collagen-plumped lips and liposuction-shaped ankles and calves. In 1989, 681,00O procedures were done, up by 80 percent since 1981; over half of these were performed on patients between the ages of 18 and 35. The trendy Details magazine described such procedures as just "another fabulous (fashion) accessory" and used to invite readers to share their cosmetic surgery experiences in the monthly column "Knifestyles of the Rich and Famous."

Popular culture does not apply any brakes to these fantasies of rearrangement and transformation. "The proper diet, file right amount of exercise, and you can have, pretty much, any body you desire," claims an ad for a bottled mineral water. Of course, the rhetoric of choice and self-determination and the breezy analogies comparing cosmetic surgery to fashion accessorizing are deeply misleading. They efface not only the inequalities of privilege, money, and time that prohibit most people from indulging in these practices, but also the desperation that characterizes the lives of those who do. "I will do anything, anything to make myself look and feel better," says a contributor to the "Knifestyles" column. Medical science has now designated a new category of "polysurgical addicts" (or, as more casually referred to, "scalpel slaves") who return for operation after operation, in perpetual quest of that elusive yet ruthlessly normalizing goal, the "perfect" body. The dark underside of the practices of body transformation and rearrangement— reveals botched and sometimes—fatal operations, exercise addictions, and eating disorders.

W

A．only the rich should undergo such procedures

B．doctors should worry about medicine, not ethics

C．advertising should accurately reflect popular culture

D．nature should not be tampered with unnecessarily

Questions are based on the following passage.

Salt is as necessary to life as water. In many areas of Africa people once drank the urine (尿）

of animals because they had no other source of salt. Without salt, human beings die.

The human body demands that the amount of salt in the blood always stay the same. When the body does not get enough salt, it protects itself by letting less salt leave the body in urine and sweat. But it carmot reduce this output to zero. Some salt is always escaping. On a complete saltless diet, like that of some people in Africa, the body steadily loses small amounts of salt through the kidneys (肾) and sweat glands (腺）It then tries to adjust to this loss by speeding its secretion (分泌) of water. (78) In this way, the body attempts to keep the amount of salt in the blood at the necessary level. The result is a slow drying up of body and,inally,death. The person dies of thirst.

In cases where there is little or no water to drink, the body tries to do the opposite thing. Again, it must keep the salt level in the blood constant. Because it has little water, it attempts to stop water from leaving the body and to increase its secretion of salt. But, as with the escaping salt, it cannot be completely successful. Some water still leaves and the person eventually dies of thirst. In short, the body's normal needs for salt and for water are both parts of the same important need to keep the salt level in the blood constant.

Some African people once drank animal urine __________ 查看材料

A.when they were going to die

B.because they were thirsty

C.because there was little salt

D.because they were short of water

the noblest activity of the human mind, but the seekers after truth have come to such【B2】conclusions that it often seems that very little progress has been made.【B3】, there are many people who reel that we are actually going backward. They【B4】, often contemptuously, that we have accumulated more "knowledge" than our ancestors, but they think we are farther from the truth than ever, or even that we have【B5】the truth that we once possessed.

If people look for anything long enough without finding it, the question naturally arises【B6】the thing is really there to find. You have seen a picture of an animal with a lion's head, a goat's body, and a serpent's tail—and maybe an eagle's wings for good【B7】There is plenty of evidence that each part of this animal【B8】—but there is no【B9】evidence that the parts ever occur in this combination. It is at least conceivable that the seekers after "truth" have made a similar mistake and invented an【B10】combination.

【B1】

A．regarded

B．considered

C．pondered

D．referred