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All that we really need to plot out the future of our universe are a few good measurements

. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we don't know about the way the universe is put together. But we do know exacdy what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it. Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard(调车场). All of the switches(转辙器) are set before the train arrives, so that its path is completely determined. Some switches we can see, others we cannot. There is no ambiguity if we can see the setting of a switch; we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the entire subsequent course of events.

When we think about the future of the universe, we can see our "track" many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.

According to the passage, it is difficult to be certain about the distant future of the universe because we______.

A.have too many conflicting theories

B.do not have enough funding to continue our research

C.are not sure how the universe is put together

D.have focused our investigations on the moon and planets

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更多“All that we really need to plo…”相关的问题
第1题
Have you 【B1】______ asked yourself why children go to school? You will probably say that t
hey go 【B2】______ their own language and other languages, arithmetic, history, science and 【B3】______ subjects. That is quite true, but why do they learn these things? And are these things 【B4】______ that they learn at school?

We 【B5】______ our children to 【B6】______ them for the time 【B7】______ they will be big and will have work 【B8】______ themselves. Nearly all they study at school has some 【B9】______ use in their life. But is that the only reason 【B10】______ they do to school?

There is 【B11】______ in education then we have just learning facts. We go to school 【B12】______ all to lean how to learn 【B13】______ when we have 【B14】______ school we can continue to learn. A man who really knows 【B15】______ will always be successful. Because 【B16】______ he has to do something new which he has never had to do 【B17】______ , he does it in the best 【B18】______ . The uneducated person 【B19】______ , is probably unable to do something new, or does it badly. The purpose of schools, therefore, is not just to teach languages 【B20】______ to teach pupils the way to learn.

A.either

B.whether

C.ever

D.as well

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第2题
We can make mistakes at any age. Some mistakes we make are about money, but most mistakes
are about people. "Did Jerry really care when I broke up with Helen?" "When I got that great job, did Jim really feel good about it, as a friend? Or did he envy my luck?" "And Paul—why didn't I pick up that he was friendly just because I had a car?" When we look back, doubts like these can make us feel bad. But when we look back, it's too late.

Why do we go wrong about our friends or our enemies? Sometimes what people say hides their real meaning. And if we don't really listen, we miss the feeling behind the words. Suppose someone tells you, "You' re a lucky dog. " Is he really on your side? If he says, "You' re a lucky guy. " or "You' re a lucky gal. " , that's being friendly. But" lucky dog" ? There's a bit of envy in those words. Maybe he doesn't see it himself. But bringing in the "dog" bit puts you down a little. What he may be saying is that he doesn't think you deserve your luck.

"Just think of all the things you have to be thankful for" is another noise that says one thing and means another. It could mean that the speaker is trying to get you to see your problem as part of your life as a whole. But is he? Wrapped up in this phrase is the thought that your problem isn't important. It's telling you to think of all the starving people in the world when you haven't got a date for Saturday night.

How can you tell the real meaning behind someone's words? One way is to take a good look at the person talking. Do his words fit the way he looks? Does what he says square with the tone of voice? His posture? The look in his eyes? Stop and think. The minute you spend thinking about the real meaning of what people say to you may save another mistake.

When the writer recalls the things that happened between him and his friends, he

A.feels happy, thinking of how nice his friends were to him

B.feels he may not have"read" his friends'true feelings correctly

C.thinks it was a mistake to view Jim as a friend

D.is sorry that his friends let him down

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第3题
We can make mistakes at any age. Some mistakes we make are about money. But most mistakes
are about people. "Did Jerry really care when I broke up with Helen? .... When I got that great job, did Jim really feel good about it, as a friend? Or did he envy my luck?" When we look back, doubts like these can make us feel bad. But when we look back, it' s too late.

Why do we go wrong about our friends or our enemies? Sometimes what people say hides their real meaning. And if we don' t really listen closely we miss the feeling behind the words. Suppose someone tells you, "You' re a lucky dog." That' s being friendly. But "lucky dog?" There' s a bit of envy in those words. Maybe he doesn' t see it himself. But bringing in the "dog" puts you down a little. What he may be saying is that he doesn' t think you deserve your luck.

"Just think of all the things you have to be thankful for is another noise that says one thing and means another. It could mean that the speaker is trying to get you to see your problem as part of your life as a whole. But is he? Wrapped up in this phrase is the thought that your problem isn' t important. It' s telling you to think of all the starving people in the world when you haven't got a date for Saturday night.

How can you tell the real meaning behind someone' s words? One way is to take a good look at the person talking. Do his words fit the way he looks? Does what he says agree with the tone of voice? His posture? The look in his eyes? Stop and think. The minute you spend thinking about the real meaning of what people say to you may save another mistake.

This passage is mainly about ______.

A.how to interpret what people say

B.what to do when. you listen to others talking

C.how to avoid mistakes when you communicate with people

D.why we go wrong with people sometimes

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第4题
Something big is happening to the human race—something that could be called The Great Tran
sformation.

The Transformation consists of all the changes that are occurring m human life due to advancing technology. For thousands of years such progress occurred slowly. Now, everything is changing so fast that you may find yourself wondering where all this progress is really leading.

Nobody knows what all these changes really will mean in the long run. But this mysterious Transformation is the biggest story of all time. It is the story of the human race itself.

Some people worry about what will happen when the deposits of petroleum are gone, but already researchers are finding all kinds of new ways to obtain energy. Someday, solar power collected by satellites circling the earth of fission power manufactured by mankind may give us all the energy we need for an expanding civilization. Space exploration promises to open up many new territories for human settlement, as well as leading to the harvest of mineral resources like the asteroids.

Scientific research continues to open up previously undreamed-of possibilities. Fifty years ago, few people could even imagine things like computers, lasers, and holography. Today, a host of newly emerging technologies such as artificial intelligence and genetic engineering are opening up all kinds of new paths for technologists.

Like it or not, our advancing technology has made us masters of the earth. We not only dominate all the other animals, but we are reshaping the world's plant life and even its soil and rocks, its waters and surrounding air. Mountains are being dug up to provide minerals and stone for buildings. The very ground under our feet is washing away as we chop down the forests, plow up the fields, and excavate foundations for our buildings.

Human junk is cluttering up not only the land but even the bottom of the sea. And so many chemicals are being released into the air by human activities that scientists worry that the entire globe may warm, causing the polar icecaps to melt and ocean waters to flood vast areas of the land.

During the twentieth century, advancing technology has enabled man to reach thousands of feet into the ocean depths and to climb the highest mountains. Mount Everest, the highest mountain of all, resisted all climbers until the 1950's. Now man is reaching beyond Earth to the moon, Mars, and the stars.

No one knows what the Great Transformation means or where it will ultimately lead. But one thing is sure: Human life 50 years from now will be very different from what it is today.

It's also worth noting that our wondrous technology is posing an increasingly insistent question: When we can do so many things, how can we possibly decide what we really should do? When humans were relatively powerless, they didn't have to make the choices they have to make today.

Technology gives us the power to build a magnificent new civilization—if we can just agree on what we want it to be. But today, there is little global agreement on goals and how we should achieve them.

So it remains to be seen what will happen as a result of our technology. Pessimists worry that we will use the technology eventually to blow ourselves up. But they have been saying that for decades, and so far we have escaped. Whether we will continue to do so remains unknown—but we can continue to hope.

The Great Transformation is caused by______.

A.artificial intelligence and genetic engineering

B.the shortage of natural resources

C.the development of practical science

D.unknown reasons

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第5题
Education is not an end, but a means to an end. In other words, we do not educate children
only for the purpose of educating them; our purpose is to fit them for life. As soon as we realize this fact, we will understand that it is very important to choose a system of education which will really prepare children for life. It is not enough just to choose the first system of education one finds, or to continue with one's old system of education without examining it to see whether it is in fact suitable or not.

(85) In many modern countries it has for some time been fashionable to think that, by free education for all— whether rich or poor, clever or stupid—one can solve all the problems of society and build a perfect nation. But we can already see that free education for all is not enough; we find it in such countries a far larger number of people with university degrees than there are jobs for them to fill. Because of their degrees, they refuse to do what they think "low" work; and, in fact, work with the hands is thought to be dirty and shameful in such countries.

But we have only to think a moment to understand that the work of a completely uneducated farmer is far more important than the work of a professor—we can live without education, but we will die if we have no food.

In fact, when we say that all of us must be educated to fit us for life, it means that we must be educated in such a way that, firstly, each of us can do whatever job is suited to his brain and ability and, secondly, that we can realize that all jobs are necessary to society, and that it is very bad to be ashamed of one's work, or to scorn someone else's. Only such a type of education can be called valuable to society.

The first sentence of this passage means that______.

A.education is not the purpose of life

B.education is a way of life

C.education is to make people suitable for life

D.education is not fit for children

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第6题
"Mummy ! Mummy ! I saw some really big tadpoles (蝌蚪) in the pond (池塘). You've promised

"Mummy ! Mummy ! I saw some really big tadpoles (蝌蚪) in the pond (池塘). You've promised to catch some for us. "Phillip says, following me towards the kitchen. "Some of them have already got legs!" "Yes! We can catch them and watch them turn into frogs!" Geoffrey says suddenly. "Can we go? Right now?"The telephone has been ringing. I try to get the receiver, but it is too late. It has been cut off.

"Give me a minute to catch my breath. 'I beg. "Put the groceries away. Get some jars out. I'll go change."

We go to the wide pond which lies smooth and still, its surface dotted with pink (粉红色 ) and white lilies (睡莲). Phillip and Geoffrey, laughing and shouting, run to the water's edge. I feel the peace of the place broken by the children. I hope there are no tadpoles so we can leave quickly. There's dinner to cook.

It is quite some time before we have taken the first tadpole to the bank. "The children are wild with joy. Back in the pond we go, and we try hard to catch five more fat ones. We all agree that's enough. The sun has gone down. A frog goes to the opposite shore. It's well past dinner time, bath time and bedtime when we really leave. But none of us thinks of those things. Phillip and Geoffrey are in high spirits, and I am the same because I have done what I should.

Phillip and Geoffrey's voices must be ______.

A.sharp, nervous, tiresome

B.anxious, angry, inspiring

C.soft, sweet, pleasing

D.eager, excited, demanding

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第7题
Passage Three Education is not an end, but a means to an end. In other words, we do not

Passage Three

Education is not an end, but a means to an end. In other words, we do not educate children only for the purpose of educating them; our purpose is to prepare them for life. As soon as we realize this fact, we will understand that it is very important to choose a system of education which will really prepare children for life. It is not enough just to choose the first system of education one finds, or to continue with one's old system of education without examining it to see whether it is in fact suitable or not.

In many modern countries, it has for some time been fashionable to think that by free education for all—whether rich or poor, clever or stupid—one can solve all the problems of society and build a perfect nation. But we can already see that free education for all is not enough; we find in such countries a far larger number of people with university degrees than there are jobs for them to fill. Because of their degrees, they refuse to do what they consider "low" work; and, in fact, work with the hands is thought to be dirty and shameful in such countries.

But we have only to think a moment to understand that the work of a completely uneducated farmer is far more important than that of a professor. We can live without education, but we will die if we have no food. If no one cleaned our streets and took the rubbish away from our houses, we would have terrible diseases in our towns. In countries where there are no servants because everyone is ashamed to do such work, scientists have to waste much of their time doing housework.

In fact, when we say that all of us must be educated to prepare for life, it means that we must be educated in such a way that, firstly, each of us can do whatever job is suited to his brain and ability, and secondly, we can realize that all jobs are necessary to society, and it is very bad to be ashamed of one's work, or to scorn someone else's. Only such a type of education can be called valuable to society.

44. Education is______.

A. a purpose

B. a means

C. fashionable

D. the first system

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第8题
Peter: Molly, look at this. The newspaper says we should sort trash.Molly: That would be

Peter: Molly, look at this. The newspaper says we should sort trash.

Molly: That would be great! I always hate it when people mixing all the trash together.

Peter: () Many communities have already done that.

Molly: Yeah. The benefits of sorting out trash are obvious.

Peter: For instance?

Molly: If trash is sorted, it can be transferred to factories instead of the disposal plant.

Peter: That makes sense. ()Molly: With trash separated, pollution caused by incineration can be avoided.

Peter: It is high time for us to sort out the trash. Trash is trash only when everything is mixed together. () they can be useful again.

Molly: () Things like paper, glass, and plastics can all be recycled. They can be reused.

Peter: Sorting is good. () If people have no idea how to sort their trash, they will still put all waste in the same bag.

Molly: You are right. People should be informed about how to do that in the first place. Moreover, sorting trash should be made easy for us. Otherwise, few people would bother to do it.

Peter: I hope everything goes smoothly!

Molly: I believe it will.

A. I couldn't agree more.

B. What else?

C. Once we separate and recycle them.

D. But I have a concern.

E. That is really a great advice.

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第9题
Education is not an end, but a means to an end. In other words, we do not educate children
only for the purpose of educating them; our purpose is to prepare them for life. As soon as we realize this fact, we will understand that it is very important to choose a system of education which will really prepare children for life. It is not enough just to choose the first system of education one finds, or to continue with one's old system of enducation without examining it to see whether it is in fact suitable or not.

In many modem countries it has for some time been fashionable to think that, by free education for all-whether rich or poor, clever or stupid--one can solve all the problems of society and build a perfect nation. But we can already see that free education for all is not enough; we find in such countries a far larger number of people with university degrees than there are jobs for them to fill. Because of their degrees, they refuse to do what they consider" low" work; and, in fact, work with the hands is thought to be dirty and shameful in such countries.

But we have only to think a moment to understand that the work of a completely uneducated farmer is far more important than that of a professor, We can live without education, but we die if we have no food. If no one cleaned our streets and took the rubbish away from our houses, we would have terrible diseases in our towns. In countries where there are no servants because everyone is ashamed to do such work, scientists have to waste much of their time doing housework.

In fact, when we say that all of us must be educated to prepare for life, it means that we must be educated in such a way that, firstly, each of us can do whatever job is suited to his brain and ability and, secondly, that we can realize that all jobs are necessary to society, and it is very bad to be ashamed of one's work, or to scorn someone else's. Only such a type of education can be called valuable to society.

Education is ______.

A.a means

B.a purpose

C.fashionable

D.the first system

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第10题
All that we really need to plot out the future of our universe are a few good measurements
. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we do not know about the way the universe is put together. But we do know exactly what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it.

Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard. All of the switches are set before the train arrives, so that its path is completely determined. Some switches we can see, others we can not. There is no ambiguity if we can see the setting of a switch: we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the entire subsequent course of events.

When we think about the future of the universe, we can see our "track" many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.

According to the passage, it is difficult to be certain about the distant future of the universe because we ______.

A.have too many conflicting theories

B.do not have enough funding to continue our research

C.are not sure how the universe is put together

D.have focused on investigations of the moon and planets

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第11题
How men first learned to invent words is unknown; in other words, the origin of language i
s a mystery. All we really know is that men, unlike animals, invented certain sounds to express thoughts and feelings, actions and things, so that they could communicate with each other, and later they agreed on certain signs. These signs were called letters, which could be combined to represent those sounds and could be written down. Those sounds, whether spoken or written in letters, are called words.

The power of words, then, exists in their associations—the things they bring up before our minds. Words become filled with meaning for us by experience, and the longer we live, the more certain words remind us of the glad and sad events of our past, and the more we read and learn, the more number of words increases.

Great writers are those who not only have great thoughts but also express these thoughts in words which deeply attract our minds and emotions. This skillful use of words is called "literary style". Above all, a real poet can express his meaning in words which sing like music and can move men to tears. We should, therefore, learn to choose our words carefully and use them properly, or they will make our speech silly and vulgar.

The origin of language is______.

A.treasure handed down from the past

B.a matter that is hidden or secret

C.a problem not yet solved

D.a question difficult to answer

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