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Passage Two When we see well, we do not think about our eyes very often. It is only w

Passage Two

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 nearsighted 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 nearsighted 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.

40. 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

提问人:网友zouhao1985 发布时间:2022-01-07
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更多“Passage Two When we see well, …”相关的问题
第1题
We learn from the passage that pathological fatigue happens when ______.A.you have to be i

We learn from the passage that pathological fatigue happens when ______.

A.you have to be in two places at once

B.the cells are subject to an excessive burden

C.the body is free from diseases

D.you are involved in too many activities

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第2题
We can infer from the passage that the author will ______.A.explain why we needn't say the

We can infer from the passage that the author will ______.

A.explain why we needn't say the words when reading for meaning

B.summarize the two reading activities

C.dwell on reading aloud

D.insist that guess work should be important in both reading aloud and reading for meaning

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第3题
Questions 61-65 are based on Passage Two:Passage TwoI am Sergey Brin !I was born in Moscow

Questions 61-65 are based on Passage Two:

Passage Two

I am Sergey Brin !I was born in Moscow. In 1979,when I was 5,my family immigratedto the U. S. A. , California. I remember that on my 9th birthday I got my first computer “Commodore 64”.

Later I graduated with honors in the University of Maryland in Mathematics and IT. The main field of my science research was the technologies used to collect data from unsystematic sources as well as large quantities of texts and science data. I was the author of dozens of articles in leading American academic magazines.

The greatest event in my life happened in 1998 when I was preparing for the defense(论文答辩) of my Doctor's degree in Stanford University. There the fate made me meet Larry Page-a young computer genius. Larry belonged to the inteilectual(知识分子)society.Larry and I quickly became friends when we worked together.

We were searching day and night on the Internet. We were finding a lot of information but with the feeling we still couldn't find enough of what we were looking for. Naturally the idea for a search engine that would allow specific information to be found in the endless pool of data was born like it came to us. It wasn't our plans but we gave up the education at the university. You know the next part,maybe-we managed to turn an ordinary garage in Meplo Park,California,the U. S. A. into our first of.fice,in which Google was born. With excitement we typed the name of the thing which we created with love on September 14th, 1998—www. Google. com. Now,after those years we bought this garage. As a symbol it will always remind us that everything is possible.

Which of the following would be the best title for this passage? ()

A. The Birth of Google

B. The Founder of Google

C. The Importance of Cooperation

D. The Great Contribution to the Internet

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第4题
Time and how we experience it have puzzled physicists who have created fascinating theorie
s. But their time is measured by a pendulum (钟摆) and is not psychological time, which leaps with little regard to the clock or calendar. As someone who understood the distinction observed, "When you sit with a girl for two hours, it seems like a minute, but when you sit on hot stove, a minute seems like two hours."

Psychologists have noticed that larger units of time. such as months and years, fly on swifter wings as we age.

They also note that the more time is structured with schedule and appointments, the more rapidly it seems to pass. For example, a day at the beach. Since most of us spend fewer days at the beach and more at the office, an increase in structured time could well be to blame why time seems to speed up as we grow older.

Expectation and familiarity also make time seem to flow more rapidly. Almost all of us have had the experience of driving somewhere we've never been before. Surrounded by unfamiliar scenery, with no real notion of when we'll arrive, we experience the trip as lasting a long time. But the return trip, although exactly as long, seems to take far less time. The novelty of the outward journey has become routine. Thus taking a different route on occasions can often help slow the clock.

When days become as identical as beads(珠子) on a string, they blend together, and even months become a single day. To counter this, try to find ways to interrupt the structure of your day--to stop time, so to speak.

Learning something new is another way to slow the passage of time. One of the reasons the days of our youth seem so full and long is that these are the days of learning and discovery.

The purpose of this passage is to ______.

A.show the different ideas of physicists and psychologists on time

B.state the principles of time

C.describe various notions about time

D.explain why time flies and how to slow it down

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第5题
Passage 2 Questions 6 to 10 are based on the following passage: Nonverbal (非语言的) c

Passage 2

Questions 6 to 10 are based on the following passage:

Nonverbal (非语言的) communication has to do with gestures, movements and closeness of two people when they are talking.(78) The scientists say that those gestures, movements and so on have meaning which words do not carry.

For example, the body distance between two speakers can be important. North Americans often complain that South Americans are unfriendly because they tend to stand close to the North American when speaking, while the South American often considers the NorthAmerican to be “cold"”or “distant"”because he keeps a greater distance between himself and the person he is speaking to. The “eye contact” provides another example of what we are calling nonverbal communication. Scientists have observed that there is more eye contact between people who like each other than there is between people who don't like each other. (79) The length of time that the person whom you are speaking to looks at your eyes indicates the amount of interest he has in the things you are talking about.

On the other hand, too long a gaze can make people uncomfortable. The eyes apparently play a great part in nonverbal communication. Genuine warmth or interest, shyness or confidence can often be seen in the eyes. We do not always consider a smile to be a sign of friendliness. Someone who is always smiling, and with little apparent reasons, often makes us uneasy.

6. According to the passage, nonverbal communication__________.

A. is a method often used by people who cannot speak

B. can tell something that words cannot

C. can be used to talk with people who cannot bear

D. is less used than words

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第6题
Passage Two What is your favorite color? Do you like yellow, orange or red? If you do, y

Passage Two

What is your favorite color? Do you like yellow, orange or red? If you do, you must be an optimist (乐观者), a leader, an active person. Do you prefer grays and blues? Then you are probably quiet, shy and you would rather follow than lead. If you love green, you are strong-minded and determined. At least this is what psychologists (心理学家) tell us. They have been seriously studying the meaning of color preference (爱好), and the effect that colors have on human beings. They tell us that we don't choose our favorite color as we grow up. If you happen to love brown, you did so as soon as you opened your eyes, or at least as soon as you could see clearly.

A yellow room makes us feel more cheerful and more comfortable than a dark green one. On the other hand, black is depressing. Light and bright colors make people not only happier but more active. It is a fact that factory workers work better, harder, and have fewer accidents when their machines are painted orange rather than black or dark gray.

Remember that you will know your friends and your enemies better when you find out what colors they like and dislike. And don't forget that anyone can guess a lot about your character when you choose a piece of handkerchief.

36. According to this passage,______.

A. one can choose his color preference

B. one is born with his color preference

C. one's color preference is changeable

D. one has to choose his favorite color as soon as he can see clearly

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第7题
What do we know about the sea? Most of us have seen it. We know that it looks very pretty
when the sun is lighting on it. We also know that it can be less pretty when the weather is terrible. What other things do we know about it?

The first thing is that the sea is very big. Look at a map of the world and you'll find there is less land than sea. The sea covers 3/4 of the world. The sea is very deep in some places. Some parts of the sea are very shallow. At a place near Japan, the sea is nearly 11 kilometres deep! If the highest mountain in the world were put into the sea at the place, there would be two kilometres of water above it.

Which of the following is true according to the passage?

A.The sea always looks pretty.

B.The sea always looks terrible.

C.The sea looks neither pretty nor terrible when it is fine.

D.The sea doesn't look pretty all the time.

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第8题
These are some of the signs that you see on the roads of Great Britain.Number one is a sig

These are some of the signs that you see on the roads of Great Britain.

Number one is a sign with the number thirty on it. When drivers see this sign they must net go at more than thirty miles an hour. We see this sign when we get to parts of the country where there are many houses and other buildings, for example, when we are getting near a town. Thirty miles an hour is the speed limit.

Number two is the sign for the end of the speed limit. We are out of the town now and may go at more than thirty miles an hour.

Number three is a sign that we are near a crossroad, that is, a place where two reads cross. We must drive carefully.

Number four is a sign that there is a bend in the road. Again, we must drive slowly and carefully.

Number five is a sign that there is a hill and number six is a sign that the road gets narrow. Drivers must go slowly and carefully.

Number seven has the word "school" on it. This is a sign that there is a school at file side of the street or road. Perhaps there are children going to school or leaving school. So drivers must look carefully and go slowly until they are past the school building.

Number eight is a sign with the letter P on it. The letter P is for" Parking". A parking place is a place where drivers may leave their cars. If the driver of a car wants to leave his car and go to shops, he looks for the sign. Then he knows that he may leave his car there.

Who will most probably read the passage?

A.People who drive badly.

B.People who are learning to drive.

C.People who drive well.

D.People who drive carelessly.

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第9题
What do we know about the sea? Most of us have seen it. We know that it looks very pretty
when the sun is lighting on it. We also know that it can be less pretty when the weather is terrible. What other things do we know about it?

The first thing is that the sea is very big. Look at a map of the world and you'll find there is less land than sea. The sea covers 3/4 of the world. The sea is very deep in some places. Some parts of the sea are very shallow. At a place near Japan, the sea is nearly 11 kilometres deep! If the highest mountain in the world were put into the sea at the place, there would be two kilometres of water above it.

Which of the following is true according to the passage?

A.The sea always looks pretty.

B.The sea always looks terrible.

C.The sea looks neither pretty nor terrible when it is fine.

D.The sea doesn't look pretty all the time.

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第10题
DBecause we can feel that things are heavy, we think of weight as being a fixed quality in
an object, but it is not really fixed at all. If you could take a one-pound packet of butter 4, 000 miles out from the earth, it would weigh only a quarter of a pound.

Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4 000 miles out into space? The reason is this: All objects have a natural attraction for all other objects; this is called gravitational attraction, but this power of attraction between two objects gets weaker as they get farther apart. When the butter was at the surface of the earth, it was 4 000 miles from the centre (in other words the radius (半径) of the earth is 4 000 miles). When we took the butter 4 000 miles out, it was 8 000 miles from the centre, which is twice the distance.

If you double the distance between two objects, their gravitational attraction decreases (减少) two times two. If you treble (翻三倍) the distance, it gets nine times weaker (three times three). If you take it four times as far away, it gets sixteen times weaker (four times four) and so on.

第69题:The best title for this passage is ________.

[A] The Earth Weight

[B] Weight in Space

[C] Changing Weight on the Earth

[D] Weight on and off the Earth

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