- How long can we arrive there? -()。

erstand this, but it's quite ___2___. The human body can go without food for a long time, yet two or three days without water can usually make people die.

Many people don't know how ___3___ water the human body needs to work well, and many people do not drink enough,___4___in hot weather. Our body is mostly water about 67%--75%. If we don't have enough, we'll feel ___5___ and many will get ill. So, you know, how important the water is to us all.

1)、A.much

B.tired

C.even

D.true

E.drink

2)、A.much

B.tired

C.even

D.true

E.drink

3)、A.much

B.tired

C.even

D.true

E.drink

4)、A.much

B.tired

C.even

D.true

E.drink

5)、A.much

B.tired

C.even

D.true

E.drink

How can we get rid of garbage (垃圾) ？ Do we have enough energy sources to meet our future energy needs？

These are two important questions that many people are asking today. Some people think that man might be able to solve both problems at the same time. They suggest using garbage as an energy source, and at the same time it can save the land to hold garbage.

For a long time, people buried garbage or dumped (倾倒) it on empty land. Now, empty land is scarce. But more and more garbage is produced each year. However, garbage can be a good fuel to use. The things in garbage do not look like coal, petroleum, or natural gas, but they are chemically similar to these fossil(化石) fuels. As we use up our fossil-fuel supplies, we might be able to use garbage as an energy source.

Burning garbage is not a new idea. Some cities in Europe and the United States have been burning garbage for years. The heat that is produced by burning garbage is used to boil water. The steam that is produced is used to make electricity or to heat nearby buildings. In Paris, France, some power plants burn almost 2 million metric tons of the cities garbage each year. The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil.

Our fossil fuel supplies are limited. Burning garbage might be one kind of energy source that we can use to help meet our energy needs. This method could also reduce the amount of garbage piling up on the earth.

What two problems can man solve by burning garbage？

A．The shortage of energy and air pollution.

B．The shortage of energy and the land to hold garbage.

C．Air pollution and the shortage of fossil fuel.

D．Air pollution and the shortage of land to hold garbage.

unhappy. Worrying about our problems can affect how we do at school. It can also influence the way we behave with our families. So how do we deal with our problems？ There are many ways and here is one of them

Most of us have probably been angry with our friends, parents or teachers. Perhaps they said something you didn't like, or you felt they were unfair. Sometimes people can stay angry for years about a small problem. Time goes by, and good friendship may be lost.

When we are angry, however, we are usually the ones affected. Perhaps we have seen young children playing together. Sometimes they have disagreements, and decide not to talk to each other. However, this usually does not last for long. This is an important lesson for us to learn.

25、What is the writer？()

A.A shopkeeper

B.A doctor

C.A student

D.A dentist

26、What is the main idea of the passage？()

A.How to deal with problems

B.How to do at school

C.How to behave with families

D.How to talk to each other

27、What will happen if people stay angry for long according to the text？()

A.They feel unfair

B.They may get sick

C.Good friendship may be lost

D.They may miss each other

28、From the passage, we know an important lesson for us is()

A.playing together

B.learning to forget

C.staying angry

D.feeling unfair

perfectly that we realize how important our eyes are.

People who are near-sighted can only see things that are very close to their eyes.' Everything else is not so clear. Many people who do a lot of close work, such as writing, reading and sewing, become near sighted. Then they have to wear glasses in order to see distant (远处的) things clearly.

People who are far-sighted suffer from just the opposite problem. They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm's length. If they want to do much reading, they must get glasses, too.

Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism (散光). This, too, can be corrected by glasses. Some people's eyes become cloudy because of cataracts (白内障). Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them."

Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle (角度). To prove this to yourself, look at an object out of one eye; then look at the same object out of the other eye. You will find the object's relation to the background (背景) and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.

We should take good care of our eyes ______.

A．only when we cannot see perfectly

B．only when we can see well

C．even if we can see well

D．only when we realize how important our eyes are

is not easy to explain why one person is intelligent and another is not, or why one is cooperative and another is competitive.

Social scientists are, of course, extremely interested in these types of questions. They want to explain why we possess certain characteristics and exhibit certain behaviors. There are no clear answers yet, but two distinct schools of thought on the matter have been developed. As one might expect, the two approaches are very different from one another, and there is a great deal of debate between proponents of each theory. The controversy is often referred to as " nature/nurture".

Two who support the" nature" side of the conflict believe that our personalities and behavior. patterns are largely determined by biological and genetic factors. That our environment has little, if anything, to do with our abilities, characteristics, and behavior. is central to this theory. Taken to an extreme, this theory maintains that our behavior. is predetermined to such a degree that we are almost completely governed by our instincts.

Proponents of the " nurture" theory, or as they are often called, behaviorists, claimed that our environment is more important than our biologically based instincts in determining how we will act. A behaviorist, B. F. Skinner, sees humans as beings whose behavior. is almost completely shaped by their surroundings. The behaviorists view of the human being is quite mechanistic; they maintain that, like machines, humans respond to environmental stimulus as the basis of their behavior.

Neither of these theories can yet fully explain human behavior. In fact, it is quite likely that the key to our behavior. lies somewhere between these two extremes. That the controversy will continue for a long time is certain.

Which of the following statements would supporters of the" nature" theory agree with？

A．A person's instincts have little effect on his actions.

B．Environment is important in determining a person's behavior. and personality.

C．Biological reasons have a strong influence on how we act.

D．The behaviorists' view correctly explains how we act.

When we see well, we do not think about our eyes very often. (79) It is only when we cannot see perfectly that we realize how important our eyes are.

People who are nearsighted can only see things that are very close to their eyes. Everything else seems blurry (模糊的). Many people who do a lot of close work, such as writing, reading and sewing, become nearsighted. Then they have to wear glasses in order to see distant objects clearly.

People who are farsighted suffer from just the opposite problem. They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm's length. If they want to do much reading, they must get glasses, too.

Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism (散光). This, too, can be corrected by glasses. Some people's eyes become cloudy because of cataracts (白内障). Long ago these people olden became blind. Now, however, it is possible to operate on the cataracts and remove them.

Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself, look at object out of one eye; then look at the same object out of your other eye. You will find the object's relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.

We should take good care of our eyes ______.

A．only when we can see well

B．only when we cannot see perfectly

C．even if we can see dell

D．only when we realize how important our eyes are

What do we mean by a perfect English pronunciation？ In one (11) there are as many different kinds of English as there are speakers of it. No two speakers speak in exactly the same (12) We can always hear different forms between them, and the pronunciation of English (13) a great deal in different geographical areas. How do we decide What sort of English to use as a model？ This is not a question that can be (14) in the same way for all foreign learners of English. (15) you live in a part of the world like India or West Africa, where there is a long tradition of speaking English for general communication purposes, you should (16) to acquire a good variety of the pronunciation of this area. It would be a fashion in these circumstances to use as a model BBC English or anything of the sort. On the other hand, if you live in a country (17) there is no traditional use of English. You must take as your model some form. of (18) English pronunciation. It does not (19) very much which form. you choose. The most (20) way is to take as your model the sort of English you Can hear most often.

A. meaning

B. sense

C. case

D. situation

根据内容回答下列各题.

Not long ago, there lived in Auckland a working family who dreamed about a house of their own. Anyone then could read in the newspapers about the building companies who offered to put people into a new house 51 only a $1,000 deposit. Of course, the remainder had to be paid off with interest over a period of twenty years or so.

The worker and his wife hopefully went to one of these companies 52 this wonderful offer. And the man in the office said．“Yes, sure. You bring along $1,000 and we can 53 you with a new house.” So the worker and his wife had to work hard and in twelve months’ time they returned to the building man with $1,000. But the man in the office said, “Look, I’m sorry, 54 we’ll need $1,500 now. Costs have gone up since we saw you last, you know.”

The couple thought it over and decided it would not take very long to save the extra $500 if they worked hard. In six moths they worked 55 overtime and saved the $500 in spite of the high rent they had to pay for their flat. Back to the building man they 56 with their $1,500. But to their surprise he 57 the deposit was now $3,000. Now somewhat wiser, the worker said, “And the next time, I dare say we’ll find the deposit rising once more. How have we 58 save the extra $1,500？” “Well”, said the man, “I think we can stabilize the situation for about twelve months. By the time you come with $3,000, we will have had the house 59 for you.

The couple left, sad at heart as they saw their dream house 60 . By the time they had saved the extra $1.500, no doubt the deposit would have become still higher, maybe $5,000, then $10,000 and then…!

51.

A.for

B.with

C.on

D.to

n. These robot fishes will help people detect(探测) the pollution in the water. Ifthe robotfishes are able to finish their work successfully, the team of scientists hopes to putthefishesinto rivers,lakes and seas around the world.

The fishes are about 1.5 meters long and look like carps(鲤鱼). There will be a detector intheir bodies. They canfind the sources of pollutionin the water, and then the robot fisheswilleat part of it. Unlike other robots, they don’t need to be controlled by people faraway. Therobots all have an eight-hour battery. They can “swim” in the sea freely and send backinformation to people on the beach. After their batteries die, they will return by themselves.

There are five robot fishes altogether now.Each costs about 29,000 dollars. They are partof a three-year project between engineering company BMT Group and Essex University insoutheastern England.

“We designed the fishes creatively. We hopethe robot fishes can find the changes in the seawater and report back the information,” said Professor Huof Essex University. His team isdeveloping the fishes.

What will the robots do if they find the pollution in the water？

A.They will eat part of it.

B.They will stop working.

C.They will tell people where they are.

D.They will take it out to the beach.

How longcan a battery in their bodies work each time？A.For five hours

B.For eight hours.

C.For twelve hours.

D.For one day.

How much do the five robot fishes cost altogether？ A.$14, 500.

B.$29,000.

C.$145,000.

D.$1,450, 000.

Which of the following is TRUE？ The robot fishes ____.A.can eat anything in the water

B.need to be controlled by people

C.are 1.5 meters long andthey look like sharks

D.cango back to the beach when the batteries run down

What can we learn from the passage？ The robot fishes____.A.have worked around the world

B.can’t take out the trash in the water

C.will helppeopledetect the pollution in the water

D.help to find other fishes in the rivers, lakes and seas

请帮忙给出每个问题的正确答案和分析，谢谢！

y they tested the anticonvulsant drug ethosuzimide. Researchers found that the drug extended the life span of roundworms from 16. 7 days to 19. 6 days, a 17 percent increase。

A. But Komfeld said scientists will not know about the applicability of the drugs in humans until a similar study is done on humans. “What’s very encouraging is that these drugs were developed to treat humans, and they are well understood, because they’ve been used for a long time, ” he said。

B. Later the scientists discovered that two related anticonvulsant drugs also lengthened the lives of the worms-in the case of one drug, by almost 50 percent. “This was a big surprise to use, Komfeld said. ”“We didn’t think anticonvulsant drugs had any particular relationship to aging. That connection was completely unexpected. ”

C. Roundworms are a poor subject for experiments, because they are not like humans, even though their molecules are similar. For example, they have no bones, nor do they show emotions, making it difficult to know how exactly human subjects would react to these drugs in large quantities. However, using the worms allows experiments to be conducted quickly, because they do not live for long。

D. “Somehow the neural activity seems to regulate the aging of all of the body the skin, musculature, and reproductive tract, ” Kornfeld said. “Somehow the nervous system coordinates the progress of all these tissues, evidently, though the life stages. But we don’t know how it does that. ”

E. The discovery may also shed light on the little-understood aging process. Since the drugs act on the neuromuscular systems of both humans and worms, the findings hint at a link between neural activity and aging。

F. Unlike vertebrates, the worms are ideal subjects for the study of aging because of their short life spans, which last only a couple of weeks in a laboratory. The worm is well known in genetics, and the worm’s genome has been sequenced。

G. Use of this drug has been permitted by law since 1998 and wider use is now expected as a result of the studies. “We can clearly link this drug with human aging, but we still need to find proof, says Kornfeld optimistically. ”

______ he can recover soon, I don't mind how much money I have to pay.

A．So long as

B．So far as

C．In case

D．When