How the Body Keeps the Same Temperature The temperature of your body should be always just - 试题答案网问答

第1题

How the Body Keeps the Same TemperatureThe temperature of your body should be always just

How the Body Keeps the Same Temperature

The temperature of your body should be always just the same, no matter whether the weather is hot or cold. That is why the doctor uses his thermometer when you are sick. When you are well, your temperature is ninety-eight and six tenths degrees. If he finds it(51)than that, it is a sure sign that something is wrong.

The body keeps the same temperature all the time, because it balances (平衡) the heat it produces and(52)off. It is always burning up food and producing heat. It can produce heat faster when it needs to or give off heat faster when it becomes too warm. Let's see(53)this happens.

The heat of your body is given off chiefly through the skin. When you are(54), your skin is tight and shows "goose flesh". When you get chilly (寒冷的),you must dance around to keep warm or(55)you will shiver (颤抖).(56)your muscles begin to work, burn up fuel, and produce more heat. It is not(57)to shiver, so you usually prefer warming up by exercise, or put(58)more clothes to keep heat in.

When you are warm, the skin is loose and soft. It is so supplied(59)blood that heat is given off rapidly. If you get too hot, you begin to sweat, and(60)body heat is used in evaporating(蒸发) the moisture (潮湿) from your skin. You wear less clothing, too, in warm(61)or in a warm room, so that warmth can be given off freely. You feel you don't(62) exercising because your body is warm(63), and the extra heat produced by exercise makes you uncomfortable.

You can see from this why you(64)differently in different kinds of weather. In summer, when it is warm, you feel tired and lazy. You do not care to work or play, but enjoy lying and doing nothing. When you get out of doors in winter, the cold air makes you feel(65) You want to run and play.

A．taller

B．better

C．superior

D．higher

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第2题

Active in Old Age Keeps People MobilePeople over 70 who aren't active are more likely to d

Active in Old Age Keeps People Mobile

People over 70 who aren't active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.

These findings suggest that it's very important to stay______(51) in old age, study author Dr. Marjolein Visser told Reuters Health.

"Physical activity in old age is as important______ (52) taking your medications(药物) ," Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already______(53) from regular walking."

Visser, a Dutch (荷兰的) scholar, explained that______(54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.

To investigate how important exercise is to older adults, Visser's team interviewed 3,075 men and______(55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing______(56). The investigators followed the subjects for 4-1/2 years, noting who developed problems______ (57) and climbing stairs.

During the study, 34 percent of men and 47______ (58) of women said they began to struggle with walking and climbing stairs. People______(59) were inactive were twice as likely to report these problems as people who said they got regular exercise.

People who didn't exercise but had active lifestyles appeared to be at a somewhat higher risk of developing______ (60) walking and climbing stairs, relative to people who exercised______ (61). Still, leading an active lifestyle. appeared to protect people______(62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学) Society.

Among people who were inactive,______ (63) who walked even a little bit such as brisk (轻快的) walking for a little over an hour per week-were at a lower______ (64) of mobility (可动性) problems.

"If you do not like to exercise or you cannot exercise______(65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

A．young

B．new

C．still

D．active

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第3题

Staying Active in Old Age Keeps People Mobile People over 70 who aren't active are mo

Staying Active in Old Age Keeps People Mobile

People over 70 who aren't active are more likely to develop problems walking or climbing stairs within a few years, according to a new study,

These findings suggest that it's very important to stay_______(51) in old age,study author Dr. Marjolein Visser told Reuters Health.

"Physical activity in old age is as important________(52) taking your medications(药物)," Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already ________(53) from regular walking."

Visser, a Dutch (荷兰的) scholar, explained that________(54) active helps

prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.

To investigate how important exercise is to older adults, Visser's team interviewed 3,075 men and________(55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing________(56). The investigators followed the subjects for 4-1/2 years, noting who developed problems _________(57) and climbing stairs.

During the study, 34 percent of men and 47 ________(58) of women said they

began to struggle with walking and climbing stairs. People________(59) were

inactive were twice as likely to report these problems as people who said they got regular exercise.

People who didn't exercise but had active lifestyles appeared to be at a somewhat higher risk of developing_______60) walking and climbing stairs, relative to people who exercised _________(61). Still, leading an active lifestyle. appeared to protect people________(62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学) Society.

Among people who were inactive,________(63) who walked even a little bit -

such as brisk (轻快的) walking for a little over an hour per week - were at a lower __________(64) of mobility (可动性) problems.

"If you do not like to exercise or you cannot exercise ________(65) of serious health problems or functional limitations, do try to be as active as possible," Visser advised.

第 51 题

A．young

B．new

C．still

D．active

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第4题

听力原文：M: Boy! How quickly technology changes! So many people have a computer in their h

ome nowadays.

W: I know. I feel so behind the times.

Q: What can be inferred about the woman？

(14)

A．She has gotten behind in her work.

B．Her computer is the latest model.

C．She keeps her computer at home.

D．She doesn't have a computer.

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第5题

根据下列文章,请回答 51～65 题。 Staying Active in Old Age Keeps People Mobile People o

根据下列文章,请回答 51～65 题。

Staying Active in Old Age Keeps People Mobile

People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years，according to a new study．

These findings suggest that it's Very important to stay__________(51)in old age，study author Dr．Marjolein Visser told Reuters Health．

“Physical activity in old age is as important_________ (52) taking your medications(药物)Visser noted．“You do not need to join an expensive，fancy sports club with high—tech(高科技的)equipment．Your body will already_________(53)from regular walking。”

Visser，a Dutch(荷兰的)scholar，explained that_________ (54)active helps prevent people from becoming breathless during simple activities。increase muscle mass and strength，and maintain the balance people need to walk up stairs for instance．

To investigate how important exercise is to older adults。Visser's team interviewed 3，075 men and_________ (55)between the ages of 70 and 79，all of whom said they had no problems walking one—quarter of a mile or climbing_________ (56)。The investigators followed the subjects for 4—1/2 years，noting who developed problems_________(57)and climbing stairs．

During the study，34 percent of men and 47_________(58)of women said they began to struggle with walking and climbing stairs．People_________ (59) were inactive were twice as likely to report these problems as people who said they got regular exercise．

People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing_________ (60)walking and climbing stairs，relative to people who exercised_________(61)．Still，leading an active lifestyle. appeared to protect people——(62)problems better than being generally inactive，the researchers report in the Journal of the American Geriatrics(老年医学)Society．

Among people who were inactive，_________ (63)who walked even a little bit— such as brisk(轻快的)walking for a little over an hour per week—were at a lower _________(64)of mobility(可动性)problems．

“If you do not like to exercise or you cannot exercise________(65) of serious health problems or functional limitations，do try to be as active as possible，”Visser.

第 51 题

A．young

B．new

C．still

D．actives

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第6题

The world is known to us through many senses, not just hearing, smell, vision, and at clos

e range, touch and taste.

Our skins let us know whether the air is moist or dry, whether surfaces are wet without being sticky or slippery. From the uniformity of slight pressure, we can be aware how deeply a finger is thrust into water at body temperature, even if the finger is enclosed in a rubber glove that keeps the skin completely dry. Many other animals, with highly sensitive skins, appear to be able to learn still more about their environment. Often they do so without employing any of the five senses.

By observing the capabilities of other members of the animal kingdom, we come to realize that a human being has far more possibilities than are utilized. We neglect ever so many of our senses in concentrating on the five major ones. At the same time, a comparison between animals and man draws attention to the limitations of each sense. The part of the spectrum(光谱)seen by color-conscious man as red is non-existent for honey-bees. But a bee can see far more in flowers than we, because the ultra-violet(紫外线)to which our eyes are blind is a stimulating(刺激的)part of the insect's spectrum, and, for honeybees at least, constitutes a separate color.

We can realize how deeply a finger is put into water at body temperature ______.

A．through skin contact

B．from the even distribution of pressure

C．from the sense of direct touch

D．through the difference in temperature

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第7题

听力原文：W: You seem to have a lot of work to do at your office. You are always staying la

te and working overtime.

M: That's tree, but it's no bother to me. The work is interesting and I don't mind extra hours at all.

How does the man feel about his job？

A．He takes pleasure in doing his job.

B．His job always bothers him, but he doesn't mind.

C．Working overtime is really interesting for him.

D．His job keeps him from working extra hours.

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第8题

听力原文：Coffee can be considered one of nature's greatest gifts.It gives mental and emoti

听力原文： Coffee can be considered one of nature's greatest gifts.It gives mental and emotional clarity without harmful side effects,and it contains a wealth of nutrients.Yet,when most people drink coffee,they are not thinking that the beverage is improving their health.In fact,some may even feel a little guilty,since some believe coffee isn't good for you at all.

The truth of the matter is: coffee,like anything else,can cause problems if too much is consumed.In the short-term,too much coffee will cause sleeping problems and hypertension.In the long-term,too much coffee will cause stomach problems as well as teeth staining.

As far as the benefits,moderate consumption of coffee,which means 1 to 4 cups a day,provides your body with a wealth of antioxidants.These substances are responsible for eliminating free radicals.They are the chemical byproducts produced any time your body does something.A small number of them can help serve as a buffer against negative elements,but if they aren't kept in check,they can cause health problems.Antioxidants ensure that this doesn't happen.

Even the caffeine content within coffee can be beneficial toward your health.One way it does this is by cleaning the water of your body's cells,which keeps your weight down while cleaning out impurities.

Why do some people feel guilty when they drink coffee？

A．They are not allowed to drink coffee.

B．They think coffee does no good to them.

C．They think coffee is too expensive.

D．They should not drink coffee when working.

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第9题

Forwhatapurposedidtheresearchersuserawpotatostarchintheirexperiment？ A．Theywan

For what a purpose did the researchers use raw potato starch in their experiment？

A．They wanted to observe how the leucocyte levels reduced in the experimental pigs？

B．They wanted to simulate the effects of a diet high in resistant starch.

C．They wanted t。see how much potato an experimental pig ate every day.

D．They wanted to see how much body weight each experimental pig gained in the end.

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第10题

Forty-thousand of the world's young children die every day. This is 15-million a year.

Many of these deaths can be prevented. In fact, experts say techniques now exist to save the lives of half of these children. The techniques are medically effective, simple to use and low cost. The biggest task has been to inform. parents about these life-saving techniques.

2. The Untied Nations Children's Fund, UNICEF, list four ways to improve children's health. The first way is to use a mixture of sugar, salt and water to treat diarrhea (腹泻). The second way is to use vaccines(疫苗)to protect children against common diseases. The third way is to feed babies mother's milk. And the fourth way is to measure carefully children's growth rates.

3. Diarrhea is the major cause of death among children in developing countries. Diarrhea results when the body tries to clear itself of harmful bacteria. The body does this by forcing fluids out, sometimes uncontrollably, from the bowels(肠). If too much water, sugar and salt are lost in this way, the kidneys(肾)and heart cannot work normally, The child may die.

4. UNICEF's diarrhea treatment is called Oral Rehydration Therapy. It uses a simple mixture of sugar and salt in water. The mixture does not stop diarrhea. But if used as often as needed, it keeps fluid levels normal until the body has fought off the harmful bacteria.

A. Four ways to improve children's health

B. The major cause of death--diarrhea

C. How to cure diarrhea

D. The situation of young children in the world

E. UNICEF's diarrhea treatment

F. The cost of the diarrhea treatment

Para 1 ______.

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