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

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

The main energy foods are the carbohydrates (碳水化合物). These are sugars and starch (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.

If equal weight of the following substances is “burned” in the body, the largest amount of energy is produced by().

A、carbohydrates

B、fats

C、vitamins

D、mineral salts

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更多“We get energy from the foods w…”相关的问题

第1题

There are many problems in our modern world. One very( )serious problem is energy. We

There are many problems in our modern world. One very()serious problem is energy. We get a great () of energy we need from coal, gas, and oil. However, the () of energy which we use is () every year, and we only have enough coal, gas, and oil for the next twenty or thirty years. How will we live () the energy which these things give us？ Scientists are looking for () to this problem. They are looking for new () to produce energy. For example, they are working with new ways to () energy from the light and heat of the sun. They are also working with plans which produce energy from () of the oceans. All of the new methods () scientists are finding are still very expensive, but perhaps they will help solve our energy problems () the future.

1.A.number

B.group

C.price

D.deal

2.A.effect

B.amount

C.course

D.program

3.A.increase

B.increasing

C.had increased

D.is increasing

4.A.without

B.improve

C.producing

D.strength

5.A.key

B.a direction

C.a solution

D.service

6.A.cost

B.method

C.branch

D.pound

7.A.Show

B.pay

C.save

D.produce

8.A.property

B.remedy

C.welfare

D.movements

9.A.So that

B.which

C.whose

D.Of which

10.A.at

B.for

C.In

D.from

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第2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3题

Plants need green leaves to make food. A plant needs sunlight and carbon dioxide （二氧化碳 ) for making food and it also needs water and salts from the soil to make food too. There are certain cells ( 细胞 ) in the leaves which change carbon dioxide and water into sugar. To do this the cells need energy, which they get from the sunlight.Green leaves make food for the whole plant. A red leaf can make food too because under the red coloring of the leaf there are food-making cells. There are no leaves which are completely yellow, for they can''t make food.The plant makes sugar for its food. In sunlight green leaves make a lot of sugar. The veins ( 叶脉 ) can''t carry all this sugar away, so the leaves change the sugar into starch ( 淀粉 ), which is kept and so stored in the leaves. At night, the starch changes back to sugar. It is then carried away from the leaves. Some of the sugar is used as food by the plant while the rest is stored as starch. In some plants, food is stored in the roots; in others it is stored in the stem and in leaves, fruits and seeds.

1).Which of the following best gives the main idea of this passage? ()

A、How green plants make food

B、How green plants make sugar.C、How green plants get their energy.D、How green plants change sugar into starch.

2).The cells in the green leaves can get the most energy when ()

A、it is daytime

B、it is night

C、it is sunny

D、it is rainy

3).Food is stored in roots or stems in the form of()

A、sugar

B、starch

C、water and salts

D、carbon dioxide

4).Sugar is made for its food by ()

A、sunlight

B、veins

C、stems

D、green leaves

5).To make food, plants need a lot EXCEPT()

A、the air

B、the soil

C、green leaves

D、it is rainy

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第4题

Joe: We haven't got together for a long time. How about lunch next week？Nancy: I'm pretty

tied up all next week. How about we plan on two weeks from today？ ______.Joe: OK. Wednesday in two weeks.

A．I can reach it on that Wednesday

B．I can make it on that Wednesday

C．I can get it on that Wednesday

D．I can assure it on that Wednesday

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第5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6题

Do you find getting up in the morning so difficult that it's painful？ This might be

called laziness, but Dr.Kleitman has a new explanation.He has proved that everyone has a daily energy cycle.

During the hours when you labor through your work you may say that you are “hot”.That's true.The time of day when you feel most energetic is when your cycle of body temperature is at this peak.For some people the peak comes during the morning.For others it comes in the afternoon or evening.No one has discovered why this is so, but it leads to such familiar words as: “Get up, John! You'll be late for work again!” The possible explanation to the trouble is he is at his temperature-and-energy peak in the evening.Much family quarrelling ends when husbands and wives realize what these energy cycles mean, and which cycle each member of the family has.

You can't change your energy cycle, but you can learn to make your life fit it better.Habit can help, Dr.Kleitman believes.Maybe you're sleepy in the evening but feel you must stay up late anyway.Counteract your cycle to some extent by habitually staying up later than you want to.If your energy is low in the morning but you have an important job to do early in the day, rise before your usual hour.This won't change your cycle, but you'll get up steam and work better at your low point.

Get off to a slow start, which saves your energy.Get up with a leisurely yawn and stretch.Sit on the edge of the bed a minute before putting your feet on the floor.Avoid the troublesome search for clean clothes by laying them out the night before.Whenever possible, do routine work in the afternoon and save tasks requiring more energy for your sharper hours.

1.Dr.Kleitman thinks that （）.

A.getting up late in the morning means laziness

B.if your energy peak is in the evening, you might like getting up early

C.people can do nothing about energy cycle

D.spending some time yawning and stretching helps to keep you energetic

2.According to the passage, family quarrels may result from （）.

A.the same energy cycle of family members

B.unawareness of different energy cycles

C.failing to get up early in the morning

D.knowledge of energy cycles

3.If you are used to getting up late in the morning, you are likely to be most energetic （）.

A.in the morning B.at noon C.in the afternoonD.in the evening

4.What's the likely relationship between energy cycle and body temperature？

A.Energy cycle and body temperature are the same things.

B.The higher your temperature is, the less energetic you are.

C.The higher your temperature is, the more energetic you are.

D.There is no direct relation between them.

5.Which of the following statements is not true？

A.One can change his energy cycle once he makes up his mind.

B.We still don't know why people have different energy cycles.

C.Habit will help to make our life fit energy cycles better.

D.If you rise earlier than usual, you will be more efficient at your low point in the morning.

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第7题

A foreigner’s first impression of the U.S. is likely to be that everyone is in a rush－often under pressure. City people appear always to be hurrying to get where they are going restlessly, seeking att

A foreigner’s first impression of the U.S. is likely to be that everyone is in a rush-often under pressure. City people appear always to be hurrying to get where they are going restlessly, seeking attention in a store, and elbowing others as they try to complete their errands(任务).

Racing through daytime meals is part of the pace of life in this country. Working time is considered precious. Others in public eating places are waiting for you to finish so that they too can be served and get back to work within the time allowed. Each person hurries to make room for the next person. If you don’t, waiters will hurry you.

You also find drivers will be abrupt and that people will push past you.You will miss smiles, brief conversations, and small courtesies with strangers. Don’t take it personally. This is because people value time highly, and they resent someone else“wasting”it beyond a certain courtesy point.

The view of time affects the importance we attach to patience. In the American system of values, patience is not a high priority. Many of us have what might be called “a short fuse.” We begin to move restlessly about if we feel time is slipping away without some return------be this in terms of pleasure, work value, or rest. Those coming from lands where time is looked upon differently may find this matter of pace to be one of their most difficult adjustments in both business and daily life.

Many newcomers to the States will miss the opening courtesy of a business call, for example, they will miss the ritual socializing that goes with a welcoming cup of tea or coffee they may be traditional in their own country. They may miss leisurely business chats in a café or coffeehouse. Normally, Americans do not assess their visitors in such relaxed surroundings over prolonged small talks. We seek out evidence of past performance rather than evaluate a business colleague through social courtesies. Since we generally assess and probe professionally rather than socially, we start talking business very quickly.

1. The statement that Americans are impolite to their business colleagues is wrong.

A: T B: F

2. In the fourth paragraph, ,a high priority？ means ,a first concern？

A: T B: F

3. Americans evaluate a business colleague by establishing business relations.

A: T B: F

4. This passage mainly talks about how Americans do business with foreigners.

A: T B: F

5. We can infer from the passage that the author’s tone in writing is praisful.

A: T B: F

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第8题

The rise of "temp" work has further magnified the decreasing fights and alienation of the

worker. It is common corporate practice to phase out full-time employees and hire temporary workers to take on more workload in less time. When facing a pressing deadline, a corporation may pay $15～$20 per hour for a temp worker, but the temp worker will only see $7 or $8 of that money. The rest goes to temp agency, which is usually a corporate chain, such as Kelly Services, that blatantly makes its profits off other people's labor. This increases profits of the corporations because they can increase a workload, get rid of the employee when they're finished, and not worry about paying benefits or unemployment for that employee. I have had to work with temps a few times in my current position, and the workers only want one thing - a full-time job with benefits. We really wanted to hire one temp I was working with, but we could not offer her a full-time job because it would have been a breach in our contract with the temp agency that employed her. To hire a temp full-time, we would have had to pay the agency over a thousand dollars. Through this practice and policy, the temp agency locks its temporary workers into a horrible new form. of servitude form. which the worker cannot break free.

Furthermore, corporate powers push workers to take on bigger workloads, work longer hours, and accept less benefits by instilling a paranoia in their workforce. The capitalist bosses assume dishonesty, disloyalty, and laziness amongst workers, and they breed a sense of guilt and fear through their assumptions. Where guilt doesn't seep in, bitterness, anger, and depression take over, the highest priorities of Big Business are to increase profits and limit liabilities. Personal relations and human needs are last on their list of priorities. So what we see is a huge mass of people who are alienated, disempowered, overworked, mentally and physically ill and who spend the vast majority of their time and energy on their basic survival. They are denied a chance to really "love", because they are forced to make profits for the capitalists in power.

Which of the following can NOT be listed as a reason for corporations' hiring temporary workers and phasing out full-time employees？

A．Corporations intend to leave more workload to temporary workers.

B．Temp workers are generally well-trained and can achieve high efficiency.

C．Corporations can reduce their production cost by employing temp workers.

D．Corporations can benefit a great deal from keeping a small full-time work force.

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第9题

College is a place to explore many possibilities; you really can’t do it all-unless yo

u manage your time wisely.Here are some tips I have found very helpful for managing my time and maximizing(使 … 最大化)my study efforts ：

1.Determine your goals.What do you want to get out of a college education？ Academic(学术的)knowledge？ Leadership experience within a club？ Decide what is most important to you.Then de vote proportionate(成比例的)amounts of time to those efforts.

2.Plan ahead.You may think you can keep everything in your head, but as the activities on your schedule start piling up, making a schedule can really help organize even little tasks.

3.Study at strategic (关键的)times.Don’t wait until you’re falling asleep to study.Study first.Save those e-mails to check later, because tasks that don’t require much energy and attention can still be done when you’re tired.

4.Motivate (激励)yourself! You know t hat TV show you’ve been dying to see, or that game of chess you’ve been waiting all week to challenge your friend to.These and many other special activities can be used for motivation.Promise yourself that you’ll force yourself to work efficiently.(Don't rush through the assignment, though.)

5.Take a nap.Sometimes even a 20-minute nap in the afternoon will give you the extra energy you need to get through the day.

1.We need to play ahead in order to ().

A.keep a record of all the events

B.better organize our activities

C.store everything in our head

D.pile up little tasks neatly

2.Strategic times are best for us to ().

A.save energy

B.check e-mails

C.study efficiently

D.orga nize activities

3.Which of the following could be used as a motivation to do our assignments？()

A.Remembering our urgent tasks

B.Any activities we’re eager to do

C.Taking a break in the afternoon

D.The promise to study efficiently

4.What can help us to keep refreshed throughout the day？()

A.Doing some physical exercise

B.Taking a short nap in the afternoon

C.Rushing through some assignments

D.Playing a game of chess with a friend

5.Which of the following could be the best title for this article？()

A.Study Habits and Time Management

B.Business Management and Leadership

C.University Education and Campus Life

D.Life Goals and Academic Development

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第10题

We got up early this morning and【56】a long walk after breakfast. We walked【57】the business

section of the city. I told you yesterday that the city【58】larger than I thought it would be. Well, the business section is smaller than I thought it would be. I suppose that's【59】Washington is a special kind of city.【60】of the people in Washington work for the government.

About 9:30 we went to the White House. It's【61】the public from ten【62】twelve, and there was a long line of people【63】to get in. We didn't have to wait very long, because the line moved pretty quickly.

The White House is really white. It【64】every year. And it seems very white, because it's got beautiful lawns【65】around it, with many trees and shrubs. The grounds【66】about four square blocks. I mean, they' re about two blocks long【67】each side.

Of course, we didn't see the whole building. The part【68】the president lives and works can not be visited by the public. But the part we saw was beautiful. We went through five of the main rooms. One of【69】was the library, on the ground floor. On the next floor, there are three rooms named【70】the colors that are used in them: the Red Room, the Blue Room, and the Green Room. The walls are covered with silk【71】There are【72】old furniture, from the time【73】the White House was【74】built. And everywhere there are paintings and statues of former presidents and【75】famous people from history.

(56)

A．made

B．took

C．did

D．set

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