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Passage Two Only one animal can walk 200 miles without stopping once to rest. It would t

Passage Two

Only one animal can walk 200 miles without stopping once to rest. It would take a person two days and two nights to walk this far, and only one man has ever done it without stopping. What amazing animal has such endurance？ The camel! The camel is well known for something else, too. It can cross an entire desert without a single drink of water. Its body is built in a special way to help it store water and food.

A person has just one stomach, but a camel has quite a few. Within each stomach are layers and layers of cells. These cells are like tiny water balloons, storing liquids until the camel needs them. When the camel drinks, the cells grow larger and larger. For a whole week, they can keep the animal's thirst away by sending water to all parts of its body.

And did you ever wonder why the camel has a hump？ The hump is a storage place for fat. Because it has this storage area, the camel does not need to eat very often. When the animal needs energy, the layers of fat serve as fuel to keep it going on the long, hot days in the burning sun.

The camel has one other gift that makes it well suited to arid regions. This gift is its amazing nose. A camel can smell a water hole from miles away!

When a camel moves it sways from side to side like a ship on a wavy ocean. Because of this swaying motion, the camel has been called the "Ship of the Desert."

40. The camel's hump is a storage place for ______.

A. muscles

B. extra water

C. body sugars

D. fat

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第1题

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

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第2题

Passage Two How can a single postage stamp be worth $ 16,800？ Any mistake made in th

Passage Two

How can a single postage stamp be worth $ 16,800？

Any mistake made in the printing of a stamp raises its value to stamp collectors. A mistake on one in expensive' postage stamp has made the stamp worth a million and a half times its original value.

The mistake was made more than a hundred years ago in the British colony of Mauritius, a small is land in the Indian Ocean. In 1847 an order for stamps was sent to a London printer, and Mauritius was to become the fourth country in the world to issue stamps.

Before the order was filled and delivered, a ball (舞会) was planned at Mauritius' Government House, and stamps were needed to send out the invitations. A local printer was instructed to copy the de sign for the stamps. He accidentally inscribed the words "Post Office" instead of "Post Paid" on the sever al hundred stamps that he printed.

Today there are only twenty-six of these misprinted stamps left--fourteen "One Penny Orange-Reds" and twelve "Two Penny Blues". Because of the Two Penny Blue's rareness (罕见) and age, collectors have paid as much as $ 16,800 for it.

36. A postage stamp's value to collectors is raised if ______.

A. there are few others like it

B. there are no errors on the stamps

C. a mistake is made in the ,printing

D. both A and C

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第3题

Question 24 to 27 are based on the following passage.Scientists can learn about man by stu

Question 24 to 27 are based on the following passage.

Scientists can learn about man by studying animals, such as mice, rats and monkeys. The scientists in a laboratory areexperimenting on mice and they are studying the relationship between diet and health.

In this experiment, the scientists are studying the relationship between the amount of food the mice can eat and theirhealth. The mice are in three groups. All these groups are receiving the same healthy diet. But the amount of food that eachgroup is receiving is different. The first group is eating one cup of food each day, the second two cups, and the third threecups.

After three years, the healthiest group is the one that is only eating one cup of food each day. The mice in this group arethinner than normal mice but they are more active. Most of the day, they are running, playing with one another, and using theequipment in their cages. Also, they are living longer. Mice usually live for two years, while most of the mice in this groupare still alive after three years.

The second group of mice is of normal weight. They are healthy, too. They are active, but not as active as the thinnermice. But they are only living about two years.

The last group of mice is receiving more food than the other two groups. Most of the day, these mice are eating orsleeping. They are not active. These mice are living longer than the scientists thought —about a year and a half, but they arenot healthy. The are sick more often than the other two groups.

24. The first group is the thinnest mainly because__________

A.they run and play all day long

B.they eat only one cup of food a day

C.they live longer than the other groups

D.they are bored with the kind of food in the cup

How long do normal mice live according to the passage？A.about one year

B.about a year and a half

D.about two years

E.about three years

What can we learn from the experiment？A.daily amount of food may influence our health

B.sleeping may have nothing to do with weight

C.playing with others may help us sleep better

D.less exercise may make us live longe

This passage is mainly about the relationship between___________A.food and health

B.sleep and weight

C.weight and exercise

D.exercise and equipment

请帮忙给出每个问题的正确答案和分析，谢谢！

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第4题

Passage Four "We're more than halfway （中途) now; it's only two miles farther to the

Passage Four

"We're more than halfway (中途) now; it's only two miles farther to the tavern (客栈) ," said the driver.

"I'm glad of that," answered the stranger, in a more sympathetic way. He meant to say more but the east wind blew clear down a man's throat if he tried to speak. The girl's voice was quite attractive; however, later he spoke again.

"You don't feel the cold so much at twenty below zero in the Western country. There isn't such damp chill (潮冷)", he said, and then it seemed as if he had blamed the uncomplaining young driver. She had not even said that it was a bad day, and he began to be conscious of a warm hopefulness of spirit, and sense of pleasant adventure under all the woolen scarves.

"You'll have a cold drive going back," he said anxiously, and put up his hand for the twentieth time to see if his coat collar was as close to the back of his neck as possible.

"I shall not have to go back!" cried the girl, with eager pleasantness. "I'm on my way home now. I drove over early just to meet you at the train. We had word that someone was coming to the tavern."

46. How far was the drive from the train to the tavern？

A. One mile.

B. About four miles.

C. Two miles.

D. Less than four miles.

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第5题

Passage Two Started in 1636, Harvard University is the oldest of all the many coll

Passage Two

Started in 1636, Harvard University is the oldest of all the many colleges and universities in the United States. Yale, Princeton, Columbia and Dartmouth were opened soon after Harvard.

In the early years, these schools were much alike. Only young men went to college. All the students studied the same subjects, and everyone learned Latin, Greek and Hebrew. Little was known about science then, and one kind of school could teach everything that was known about the world. When the students graduated, most of them became ministers (大臣) or teachers.

In 1782, Harvard started a medical school for young men who wanted to become doctors. Later, lawyers could receive their training in Harvard's law school. In 1825, besides Latin and Greek, Harvard began teaching modern languages, such as French and German. Soon it began teaching American history.

As knowledge increased, Harvard and other colleges began to teach many new subjects. Students were allowed to choose the subjects that interested them.

Today, there are many different kinds of colleges and universities. Most of them are made up of smaller schools that deal with (涉及) special fields of learning. There's so much to learn that one kind of school can't offer it all.

36. The oldest university in the US is______.

A. Yale

B. Princeton

C. Harvard

D. Columbia

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第6题

Because 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 center (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 center, 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 (成三倍) 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.

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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第7题

Population tends to grow at an exponential（指数的)rate. This means that they progressively

Population tends to grow at an exponential(指数的)rate. This means that they progressively double. As an example of this type of growth rate take one penny and double every day for one month. After the first week, you would have only 64 cent, but after the fourth week you would have over a million dollars.

This helps explain why the population has come on“all of a sudden” took from he beginning of human 1ife to the year 1830 for the population of the earth to reach one billion. That repents(缓慢进行) a time span of at least two million years. Then it took from 1830 to 1930 for world population to reach 2 billion. The next billion was added by 1960 only thirty years and in 1975 world population reached 4 billion which is another billion people in only fifteen years.

World population is increasing at a rate of 9, 000per hour, 220,000 per day and 80 million per year.

This is not only due to higher birth rate, but to lower death rate as well. The number of births has not declined at the same rate as the number of deaths.

Some countries such as Columbia, Thailand, Morocco, Costa Rica and the Philippines are doubling their population about every twenty-one years with a growth rate of 3.3 percent a year or more. The United States is doubling its population about very eighty-seven years, with a rate of 0.8 percent per year.Every time a population doubles, the country involved needs twice as much of everything, including hospitals, schools, resources, food and medicines to care for its people. It is easy to see that this is very difficult to achieve for the more rapidly growing countries.

This passage chiefly discusses

A.the growth of world population.

B.one type of the exponential rate

C.the population problem of more rapidly growing countries.

D.the possible ways of dealing with the rapid population growth

According to the passage what helps to explain why the population problem has come on “all of a sudden”？A.The penny that doubles itself every day for one month

B.The time span of at 1east two million years in human history.

C.An illustration of the exponent growth rate given by the author.

D.The large amount of money you would luckily make after the fourth week

Which of the following statements is NOT true？A.World population is increasing at a rate of 150 per minute

B.Lower death rate also contributes to world population growth

C.The population of Columbia has been doubling every year for 21 years.

D.The United States is usually doubling its population on about every 87 years.

It took ______ for the world to increase its population from 1 billion to 4 billion.A.100 years

B.175 years

C.1975 years

D.over two million years

When a population doubles, the country involved needs twice as much of everything including __.A.hospitals and medicines

B.schools and students

C.food and manpower resources

D.all of the above

请帮忙给出每个问题的正确答案和分析，谢谢！

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第8题

Part ADirections: Read the following four texts. Answer the questions below each text by c

Part A

Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. Mark your answers on ANSWER SHEET Ⅰ.

Text 1

Populations tend to grow at an exponential rate. This means that they progressivel, double. As an example of this type of growth rate, take one penny and double it every day for one month. After the first week, you would have only 64 cents, but after the fourth week you would have over a million dollars.

This helps explain why the population has come on "all of a sudden". It took from the beginning of human life to the year 1830 for the population of the earth to reach one billion. That represents a time span of at least two million years. Then it took from 1830 to 1930 for world population to reach 2 billion. The next billion was added by 1960, only thirty years, and in 1975 world population reached 4 billion, which is another billion people in only Fifteen years.

World population is increasing at a rate of 9,000 per hour, 220,000 per day, 80 million per year. This is not only due to higher birth rates, but to lower death rates as well. The number of births has not declined at the same rate as the number of deaths.

Some countries, such as Columbia, Thailand, Morocco, Costa Rica, and the Philippines, are doubling their populations about every twenty - one years, with a growth rate of 3.3 percent a year or more. The United States is doubling its population about every eighty-seven years, with a rate of 0.8 percent per year. Every time a population doubles, the country involved needs twice as much of everything, including hospitals, schools, resources, food and medicines to care for its people. It is easy to see that this is very difficult to achieve for the more rapidly growing countries.

21. This passage chiefly discusses ______.

A) the growth of world population

B) one type of the exponential rate

C) the population problem of more rapidly growing countries

D) the possible ways of dealing with the rapid population growth

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第9题

Population tends to grow at an exponential（指数的)rate. This means that they progressively

Population tends to grow at an exponential(指数的)rate. This means that they progressively double. As an example of this type of growth rate, take one penny and double every day for one month. After the first week, you would have only 64 cents, but after the fourth week you would have over a million dollars.

This helps explain why the population has come on "all of a sudden". It took from the beginning of human life to the year 1830 for the population of the earth to reach one billion. That repents(缓慢进行)a time span of at least two million years. Then it took from 1830 to 1930 for world population to reach 2 billion. The next billion was added by 1960, only thirty years, and in 1975 world population reached 4 billion, which is another billion people in only fifteen years.

World population is increasing at a rate of 9000 per hour, 220000 per day, and 80 million per year. This is not only due to higher birth rate, but to lower death rate as well. The number of births has not declined at the same rate as the number of deaths.

Some countries, such as Columbia, Thailand, Morocco, Costa Rica, and the Philippines, are doubling their population about every twenty-one years, with a growth rate of 3.3% a year or more. The United States is doubling its population about very eighty-seven years, with a rate of 0.8% per year. Every time a population doubles, the country involved needs twice as much of everything, including hospitals, schools, resources, food and medicines to care for its people. It is easy to see that this is very difficult to achieve for the more rapidly growing countries.

This passage chiefly discusses______.

A．the growth of world population

B．one type of the exponential rate

C．the population problem of more rapidly growing countries

D．the possible ways of dealing with the rapid population growth

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第10题

It is concluded from the passage that the testimony given by one or two persons is ______.

A．always worthless

B．often reliable

C．interesting but not reliable

D．nearly worthless if it is concerned with matters of great importance

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