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When we see well, we do not think about our eyes very often. It is only when we cannot see

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

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更多“When we see well, we do not th…”相关的问题
第1题
When we see well, we do not think about our eyes very often. (79) It is only when we canno

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

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第2题
Well, we don't see eye () eye on that.

A.with

B.in

C.to

D.at

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第3题
You have recently been appointed as an assistant management accountant in a large company,
PC Co. When you meet the production manager, you overhear him speaking to one of his staff, saying:

‘Budgeting is a waste of time. I don’t see the point of it. It tells us what we can’t afford but it doesn’t keep us from buying it. It simply makes us invent new ways of manipulating figures. If all levels of management aren’t involved in the setting of the budget, they might as well not bother preparing one.’

Required:

(a) Identify and explain SIX objectives of a budgetary control system. (9 marks)

(b) Discuss the concept of a participative style. of budgeting in terms of the six objectives identified in part (a). (11 marks)

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第4题
Which of your two hands do you use more? Very few of us can use both hands equally well. M
ost of us are right-handed. Only about five people out of a hundred are left-handed. New-born babies can take hold of things with either of their hands, but. in about two years they usually use their right hands. Scientists have found that monkeys like to use one of their hands more than the other, but it can be either hand. There are as many right-handed monkeys as there are left-handed ones. Next time when you visit a zoo, you'll see that some of them will use their right hands and others will use their left hands. But most of the people use their right hands better and this makes life difficult for those left-handed people. We live in a right-handed world.

Most people ______.

A.are left-handed

B.are right-handed

C.can use both hands equally well

D.never use left hands

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第5题
Anna is our only daughter. My wife and I have two sons, and Anna is the youngest in th
e family, but she's twenty-five now. Anna was not well when she was little. It was a very worrying time and she stayed at home a lot. She was seen first by the local doctors, and then she was sent to a specialist in Cardiff where she was diagnosed as diabetic. It was my wife who mainly took care of her then. I am not very good at looking after little children. I suppose I am a bit traditional in that way. But when she grew up a bit, we spent a lot of time together. We loved walking and talking and discussing life. We still love it today. We get on very well. Although she looks like me (tall, dark hair, dark eyes and dark skin), she takes after her mother: she is artistic and musical, and like her mother she's attractive. She loves looking after animals - she has two dogs, three cats and a goat. She lives in a little house in the country. I like animals too. I like riding and hunting, but Anna hates hunting. She thinks it's cruel. We discuss it a lot. She is quiet and a bit shy with strangers. I am more outgoing and I love meeting new people. But she's not boring - actually, she's very funny. She always has lots of stories of her life in the country. She's an art and music teacher in a little village school. She is very good-natured. Anna says we brought her up well, and she's going to bring her children up to be honest and loyal. But I think she was easy to bring up. I don't remember ever telling her off.

1.According to the passage, when Anna was a child, she ().

2. It can be inferred from the passage the author thinks looking after little children is ().

3. What does 'take after' mean in the first sentence of Para. 2?

4. My daughter and I have little in common in terms of ().

5. From the passage, we can see the author's description of his daughter is ().

(1).A、got an illness

B、was very queer

C、didn't look like the author

(2).A、his advantage

B、mainly a woman's responsibility

C、really enjoyable

(3).A、look after

B、be different from

C、look like

(4).A、loving walking and talking

B、character

C、loving animals

(5).A、affectionate

B、humorous

C、critical

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第6题
Nowadays most people decide quite【61】what kind of work they would do. When I was at school
, we had to choose【62】when we were fifteen. I chose scientific subjects. "【63】, scientists will earn a lot of money," my parents said.【64】I tried to learn physics and chemistry, but in the【65】I decided that I【66】a scientist. It was a long time【67】I told my parents that I wasn't happy at school. " I didn't think you were," said my mother. "【68】," said my father. "Well, the best thing to do now is to look for a job. "

I【69】about it with my friends Frank and Lesley.【70】of them【71】suggest anything, but they promised that they would ask their friends. A few days later【72】I was still in bed,【73】telephoned. "Is that Miss Jenkins?" a man' s voice asked. "I【74】your hobby is photography and I've got a job that might interest you in my clothes factory. My name is Mr. Thomson. " He seemed pleasant on the phone【75】I went to see him. I was so excited that I almost forgot【76】goodbye. "Good luck!" my mother said to me.

I arrived【77】early and when Mr. Thomson came he asked me if I【78】waiting a long time. "No, not long. " I replied. After talking to me for about twenty minutes he【79】me a job —not as a photographer,【80】a model!

(61)

A.early

B.presently

C.soon

D.quickly

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第7题
根据以下材料回答第 46~50 题: Passage FourNews has just been received of an air crash

根据以下材料回答第 46~50 题:

Passage FourNews has just been received of an air crash in the north of England. The plane , which was on a charter flight from London to Carlisle, was carrying a party of businessmen on their way to a trade fair. It seems likely that the plane ran into a heavy fog as it was approaching Carlisle and was obliged to circle for some twenty minutes. Everything seemed to be going well. The pilot was in constant radio communication with Ground Control when the engines suddenly cut out and all contact was lost. The plane crashed on the site of the ancient Roman camp at Hadrian’s Hill , a place well known to archaeologists(考古学家)and tourists.

So far few details have been reported, but it is feared that at least twenty people lost their lives, among them the pilot, who was killed instantly, The local ambulances and firemen were on the scene within minutes of the crash , but additional help had to be rushed from other areas.

Mr. Lesilie Collins, one of the survivors, told our reporter, “We passengers noticed the engines were making a funny noise. Of course we couldn’t see anything because of the fog, but the pilot said there was nothing to worry about. The next thing we know, the engines went dead. There was a rushing noise-and after that I don’t remember any more.”

Mr. Collins is now in hospital, being treated minor injuries. We will be bringing you further news of crash as we receive it . In the meantime relatives are asked to ring 02-3457211 for information.

第 46 题 The plane was_________.

A.flying some businessmen to London

B.on a regular flighy to London

C.returning from a trade fair

D.bound for Carlisle

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第8题
From the second paragraph, we can see that in the early years,______. A. those c

From the second paragraph, we can see that in the early years,______.

A. those colleges and universities were the same

B. people, young or old, might study in the colleges

C. students studied only some languages and science

D. when the students finished their school, they became lawyers or teachers

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第9题
I was only eight years old when the Second World War ended, but I can still remember somet
hing about the victory celebrations in the small town where I lived. We had not suffered much from the war there, though like most children of my age, I was used to see-ing bombed houses in the streets and the enormous army lorries passing through. But both at home and at school I had become accustomed to the phrases "before the war" and "when the war's over." "Before the war," apparently, things had been better, though I was too young to understand why, except there had been no bombs then, and people had eaten things like ice cream and bananas, which I had only heard of. When the war was over, we would go back to London, but this meant very little to me. I did not remember what Lon-don was like.

What I remember now about VE Day was the afternoon and the evening. It was a fine May day. I remember coming home at about five o'clock. My father and mother came in about an hour later. After dinner I said I wanted to see the bonfire (篝火), so when it got dark my father took me to the end of the street. The bonfire was very high, and some peo-ple had collected some old clothes to dress the unmistakable figure with the moustache (小胡子) they had put on top of it. Just as we arrived, they set light to it. The flames rose and soon covered the "guy." Everyone was cheering and shouting, and an old woman came out of her house with two chairs and threw them on the fire to keep the fire going.

I stood beside my father until the fire started to go down, not knowing what to say. He said nothing either. He had fought in the First World War and may have been remem-bering the end of that. At last he said, "Well, that's it, son. Let's hope that this time it really will be the last one. "

Where did the narrator live before the Second World War?

A.In a small city.

B.In London.

C.In Europe.

D.In the countryside.

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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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