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[主观题]

We get energy from the foods we eat.Our food supplies energy to keep our organs work

ing.Our food also supplies heat to warm our bodies.

The main energy foods are the carbohydrates (碳水化合物).These are the sugars and starches(淀粉). Wheat and rice are rich in starch and many fruits and vegetables contain considerable amount of sugar. Sweets, honey and jam are also rich in sugar.

Like carbohydrates, fats are food that provides us with energy. Butter, margarine, certain types of fish, eggs, cooking oils and most red meats are rich in fats. Fats can be stored in various parts of the body as reserves of energy. Because fats in general are slowly digested, they satisfy hunger for long periods.

Proteins (蛋白质) are very complex substances. The body needs proteins for the growth of new cells and for the repair and replacement of old cells. Foods rich in proteins are essential to a balanced diet. Milk, some vegetables, meat, chicken, fish, cheese, grains and nuts are some foods rich in proteins.

A good diet will contain a variety of foods so that the body contains all the minerals it needs for good health.

Vitamins are necessary for the proper working of the body. If we eat a variety of foods, we can be sure of obtaining all the vitamins we need.

Water makes up about 70 per cent of the weight of the human body. The average adult needs about two liters of water daily to replace the water the body loses.

1.Of the following substances, which are not used as sources of energy by living things？()

A. Starches

B. Vitamins

C. Proteins

D. Fats

2.If equal weight of the following substances is “burned” in the body,

A. carbohydrates

B. fats

C. vitamins

D. mineral salts

3.A boy grows five centimeters a year.The new material

A. fats

B. vitamins

C. proteins

D.carbohydrates

4.Which of the following is not true？()

A. If a man weighs 150 pounds, 105 pounds are water.

B. Apple, butter and meat are rich in proteins.

C. A well-balanced diet contains proteins, fats, minerals and vitamins.

D. Biscuits, cake and sweets may provide us with energy.

5.People can get all the minerals the body needs by().

A. having a balanced diet

B. drinking more milk

C. eating fruits and vegetables

D. having more fish and eggs

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发布时间：2023-02-20

更多“We get energy from the foods we eat.Our food supplies energy to keep our organs work”相关的问题

第1题

There is no creature that does not need sleep or complete rest every day.If you want to kn

There is no creature that does not need sleep or complete rest every day.

If you want to know why, just try going without sleep for a long period of time. You will discover that your mind and body would become too tired to work properly. You would become irritable and find it hard to think clearly or concentrate on your work. So sleep is quite simply the time when the cells of your body recover from the work of the day and build up supplies of energy for the next period of activity.

One of the things we all know about sleep is that we are unconscious in sleep. We do not know what is going on around us. But that doesn't mean the body stops all activity. The important organs continue to work during sleep, but most of the body functions are slowed down.

For example, our breathing becomes slower and deeper. The heart beats more slowly, and the blood pressure is lower. Our arms and legs become limp(柔软的) and muscles are at rest. It would be impossible for our body to relax to such an extent if we were awake. So sleep does for us what the most quiet rest can not do.

Your body temperature becomes lower when you are asleep, which is the reason people go to sleep under some kind of covers. And even though you are unconscious, many of your reflexes(习惯性思维) still work. For instance, if someone tickles(使觉得痒) your foot, you will put it away in your sleep, or even brush a fly from your forehead. You do these things without knowing it.

If you don't have as much sleep as your body needs, you will ______.

A．work properly

B．think clearly

C．keep your attention on your work

D．easily get angry

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第2题

The story does not say this, but from what we have read, we can tell that ______ .A．you ge

The story does not say this, but from what we have read, we can tell that ______ .

A．you get much hungrier in space than you do on the earth

B．you can't have water to drink in a spaceship

C．astronauts must learn many new and different things

D．you can't eat anything in a spaceship

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第3题

Energy independence. It has a nice ring to it. Doesn't it? If you think so, you

Energy independence. It has a nice ring to it. Doesn't it？ If you think so, you're not alone, because energy independence has been the dream of American president for decades, and never more so than in the past few years, when the most recent oil price shock has been partly responsible for kicking off the great recession.

“Energy independence” and its rhetorical (修辞的) companion “energy security” are, however, slippery concepts that are rarely though through. What is it we want independence from, exactly？

Most people would probably say that they want to be independent from imported oil. But there are reasons that we buy all that old from elsewhere.

The first reason is that we need it to keep our economy running. Yes, there is a trickle(涓涓细流)of biofuel(生物燃料)available, and more may become available, but most biofuels cause economic waste and environmental destruction.

Second, Americans have basically decided that they don't really want to produce all their own oil. They value the environmental quality they preserve over their oil imports from abroad. Vast areas of the United States are off-limits to oil exploration and production in the name of environmental protection. To what extent are Americans really willing to endure the environmental impacts of domestic energy production in order to cut back imports？

Third, there are benefits to trade. It allows for economic efficiency, and when we buy things from places that have lower production costs than we do, we benefit. And although you don't read about this much, the United States is also a large exporter of oil products, selling about 2 million barrels of petroleum products per day to about 90 countries.

There is no question that the United States imports a great deal of energy and, in fact, relies on that steady flow to maintain its economy. When that flow is interrupted, we feel the pain in short supplies and higher prices, At the same time, we derive massive economic benefits when we buy the most affordable energy on the world market and when we engage in energy trade around the world.

61. What does the author say about energy independence for America？()

A.It sounds very attractive.

B.It ensures national security.

C.It will bring oil prices down.

D.t has long been everyone's dream.

62. What does the author think of biofuels？()

A.They keep America's economy running healthily.

B.They prove to be a good alternative to petroleum.

C.They do not provide a sustainable energy supply.

D.They cause serious damage to the environment.

63. Why does America rely heavily on oil imports？()

A.It wants to expand its storage of crude oil.

B.Its own oil reserves are quickly running out.

C.It wants to keep its own environment intact.

D.Its own oil production falls short of demand.

64. What does the author say about oil trade？()

A.It proves profitable to both sides.

B.It improves economic efficiency.

C.It makes for economic prosperity.

D.It saves the cost of oil exploration.

65. What is the author's purpose in writing the passage？()

A.To justify America's dependence on oil imports.

B.To arouse Americans' awareness of the energy crisis.

C.To stress the importance of energy conservation.

D.To explain the increase of international oil trade.

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第4题

听力原文：M: Oh, it's so cold. We haven't had such a severe winter for so long, have we？W:

听力原文：M: Oh, it's so cold. We haven't had such a severe winter for so long, have we？

W: Yes, the forecast says it's going to get worse before it warms up.

What do we learn from the conversation？

A．The weather is mild compared to the past years.

B．They are having the coldest winter ever.

C．The weather will soon get winner.

D．The weather may get even colder.

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第5题

Young people who drink or use drugs are mainly influenced by both their parents and peer p

ressure.

Other reasons they take that first drink are to be rebellious(反抗的), for curiosity or "kicks" (刺激)or to escape an unpleasant environment; And young people drink use drugs because alcohol(酒精) and drugs are at hand.

After first experimental use, young people continue to drink or use drugs because they believe these substances can relieve boredom, increase energy, decrease anxiety, solve problems, or help them socially. They may simply like the "high" they get in the early and middle stages of substance use. After continued use, they will become physically and psychologically(心理地)addicted(上瘾的).

Now that we have admitted that we have to solve this problem, we must decide how to deal with this challenge. Winning this will take a great effort involving local, state, and national government. It will require the effort of schools, but it cannot be clone by schools alone. It will also require family and community involvement. Already a great amount of time, energy and expert knowledge has been directed toward dealing with it but the problem continues.

Which of the following is not mentioned as the reason of young pedple's drinking and usingdrugs in the passage？

A．The selling of alcohol and drugs,

B．Pressure from their parents and relatives.

C．Curiosity.

D．Their eagerness to experience what ,is not permissible to them.

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第6题

Young people who drink or use drugs are mainly influenced by both their parents and their

pressure.

Other reasons they take that first drink are to be rebellious (反抗的), for curiosity or "kicks" (刺激) or to escape an unpleasant environment. And young people drink and use drugs because alcohol (酒精) and drugs are at hand.

After first experimental use, young people continue to drink or use drugs because they believe these substances can relieve boredom, increase energy, decrease anxiety, solve problems, or help them socially. They may simply like the "high" they get in the early and middle stages of substance use. After continued use, they will drink or use drugs because they become physically and psychologically (心理地) addicted (上瘾的).

Now that we have admitted that we have to solve this problem. We must decide how to deal with this challenge. Winning this will take a great effort involving local, state, and national government. It will require the effort of schools, but it cannot be done by schools alone. It will take family and com munity involvement. Already a great amount of time, energy and expert knowledge has been directed toward dealing with it but the problem continues.

Which of the following is not mentioned as the reason of drinking and using drugs in the passage？

A．the selling of alcohol and drugs

B．pressure from their parents and relatives

C．curiosity

D．their eagerness to experience what is not permissible to them

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第7题

In sixth grade,Marsha Pinto's teacher wanted her to talk more loudly and moreoften,repeatedly tlling Pinto that she would never succeed if she did notparticipate in class discussions and group work.The teacher may have had goodintentions,but she called on Pinto daily and when Pinto was bullied,the teachersuggested it was because she did not stand up for herself."She even said if I didn't participate,I would fail," says Pinto,a recent collegegraduate who now lives in New York City: Pinto was quiet,often slumped in herseat and kept her head down.The pressure from the teacher.along with bllying bya group of girls who regularly teased Pinto about being "weirdr,took its tll,I camehome crying a lot.never wanting to go back to school," says Pinto,now 21.Pinto was.and is.an introvert (内向的人).Linda Silveman,director of the GiftedDevelopment Center in Denver,says extroverts get energy primarily from athers,while introverts can become overloaded or drained by the outside world.There is greater understanding of introverts,and their talents,now than there waseven 10 years ago; however,we stl live in a culture that champions outgoingleadership,vocal cllaboration and visible performance.But Pinto's parents were supportive of her natural tendencies.Instead of pushingher to be more extroverted.they appreciated her as she was.*We felt that pushingher into activities and forcing her to speak would make her feel that she was lackingin something,and that could affect her confidence," says Pinto's father,MelwynPinto."We only encouraged and supported her when she wanted to pursue things."That gentle encouragement helped her discover strengths,including publicspeaking.She became the star of the student morning broadcasts in midle schooland tried to participate in class more.Marsha Pinto thrived in classes with teacherswho appreciated her quiet involvement,often because her parents clued them in toher natural tendencies.1.What could be the reason that Pinto did not want to go toschool?A.She faced pressure from her teacher who wantedto make her outgoing.B.She was afraid of filing a dffcult test.C.She got stage fright for a public speaking contest.D.She recenty moved to New York City and knew noone there.2.What did Pinto's parents do when they found out hernatural tendencies?A.They encouraged her to participate in group work.B.They pushed her into activities.C.They supported her to go ater what she wants.D.They forced her to speak in the public.3.Why did some of Pint's teachers appreciate her quietinvolvement in classes?A.Because of her teachers' empathy.B.Because of her own active participation.C.Because of her parents' efforts.D.Because of her classmates' cooperation.4.What do we learm about introverts from the passage?A.Introverts tend to build better relationships.B.Introverts otten feel upset when they are alone.C.Introverts are less likely to avoid risks.D.Introverts get fuel from the outside world.5.What is this passage mainly about?A.How to turn introverts into extroverts.B.How to train introverts to win a speech cometitin.C.How to help introverts to make up for their defects.D.How to encourage introverts to discover their

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第8题

听力原文：W: I wish to cash this cheque from U. S. A. , but the man in the next window told

me to bring it here.

M: Oh, yes. This is a personal cheque. We wouldn't be able to cash it for you until the proceeds are collected from the paying bank.

Q: What does the man mean？

(16)

A．The woman can't get cash before the proceeds are collected.

B．There is something wrong with the proceeds.

C．The woman will be paid directly by the paying bank.

D．The personal cheque can't be encashed over the counter.

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第9题

听力原文：M: Could your company accept bills of exchange payable 30 days after sight？W: No,

听力原文：M: Could your company accept bills of exchange payable 30 days after sight？

W: No, we don't accept any draft; instead, we usually make payment at sight.

Q: What can we infer from the conversation？

(19)

A．The man will probably wait for the payment for 30 days.

B．The man can get his payment right away.

C．The man will send an order to the company.

D．The woman will not pay the man at sight.

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第10题

It seems to shine unchangingly, pouring out a constant light year after year. But the sun

may not be nearly so stable as we suppose. It is now thought to move quickly and irregularly and change in long-term cycles, growing dimmer and then brighter with each passing year. Some even fear that its frequent changing behavior. would have a great influence on the Earth' s climate.

The source of the sun' s inconstancy is magnetism. Professor William Livingston has developed new theories about its magnetic nature.

"We don' t yet know what causes sun spots, "he says, "but we now think they ' re areas of high level magnetism that come up from the sun' s interior. So strong is their magnetic pull that the highly ionized gas nearby is not able to transmit energy out. "As a result these areas send out less heat and light and thus appear from Earth to be almost dark irregular surface patches.

Sun spot activity generally fluctuates in steady, 11-year cycled. Scientists have long formed the o pinion that as the size and number of sun spots increased, the overall energy sent out by the sun would de crease. Indeed, recent studies confirmed it, revealing that during peak periods of sun spot activity, the Earth experiences a small drop that can be seen clearly in received solar energy.

Could such a small drop in energy have an effect here on earth？ Perhaps some scientists think the world temperature could fall by' as much as 0.2 during periods of high solar magnetism.., enough to cause significant fluctuations in weather patterns.

According to the passage, it is believed that the sun ______ ．

A．moves in a quick but steady way year after year

B．sends out less and less heat and light with each passing year

C．radiates the same amount of light every year

D．might have a strong influence on the weather patterns

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