阅读下面短文，从每题所给的四个选项中选出最佳答案.

　　You are what you eat. This saying has provided scientists with clues（线索）about the diet of hominids--our early relatives of 3 million years ago.

　　Studying carbon atoms（碳原子）locked up in tooth enamel（珐琅质）, two researchers argue against the widely held belief that hominids ate little more than fruits and leaves. Sponheimer and Julia Lee-Thorp of the University of Cape Town. South Africa, report their findings in Friday's Science.

　　There aren't many clues for us to know the life of early hominids. The shape of hominids' teeth offered the first clues. Large and flat-edged with thick enamel, they looked perfect for eating nuts and fruits, different from the sharp teeth one would want to tear into meat with. The first stone tools, which would help in eating meat, didn't appear until about half a million years later.

　　Scientists have also found marks on hominids' teeth with patterns very similar to those on the teeth of modem-day fruit eaters. Sponheimer and Lee-Thorp tried a new method, looking at the chemical composition of the tooth enamel. They studied the enamel for the carbon-13. Animals that eat grasses have higher carbon-13, levels than those eating fruits and other plants.

　　What they found was that the teeth of the hominids had an in-between amount of carbon-13, which meant not only they were eating fruits they were eating a lot of grasses, or animals eating grasses. The lower carbon-13 levels could also come from eating certain types of insects（昆虫）.

　　But there are people who understand differently. Prof, Ungar of the University of Arkansas agrees the study offers new suggestions of hominid diet, but disagrees about the suggestion that meat could explain the lower carbon-13 levels.

　　One suggestion might be true though--take good care of your teeth. In 3 million years, a scientist might be using them to figure out what you ate for dinner.

（1）Which of the following can be the best title for the text?

[　　]

A. Protect Your Teeth.

B. What the Hominid Ate.

C. Where the Hominid lived.

D. The Information of Tooth Enamel.

（2）Before the two scientists' findings, most people thought that hominids ________.

[　　]

A. lived half a million years ago

B. ate mainly fruits and leaves

C. used tools to dig grass

D. had sharp teeth

（3）The two scientists' findings were mainly based on the study about ________.

[　　]

A. the shape of hominid teeth

B. the teeth marks of early fruit eaters

C. the grasses of 3 million years ago

D. the make-up of the tooth enamel

（4）What is it that Prof. Ungar finds doubtful?

[　　]

A. Hominids possibly ate grass-eating animals.

B. Hominids probably had different diets.

C. Hominids were basically fruit-and-grass eaters.

D. Hominids had lower level of carbon-13 in their teeth.

阅读下面短文，从每题所给的四个选项中选出最佳答案.

　　LONDON（Reuters）Organic fruit, delivered right to the doorstep. That is what Gabriel Gold prefers, and he is willing to pay for it. If this is not possible, the 26-year-old computer technician will spend the extra money at the supermarket to buy organic food.

　　“Organic produce is always better,”Gold said.“The food is free of pesticides（农药）, and you are generally supporting family farms instead of large farms. And more often than not it is locally（本地）grown and seasonal, so it is more tasty.” Gold is one of a growing number of shoppers buying into the organic trend, and supermarkets across Britain are counting on more like him as they grow their organic food business. But how many shoppers really know what they are getting, and why are they willing to pay a higher price for organic produce? Market research shows that Gold and others who buy organic food can generally give clear reasons for their preferences--but their knowledge of organic food is far from complete. For example, small amounts of pesticides can be used on organic produces. And about three quarters of organic food in Britain is not local but imported（进口）to meet growing demand. “The demand for organic food is increasing by about one third every year, so it is a very fast-growing market,” said Sue Flock, a specialist in this line of business.

（1）More and more people in Britain are buying organic food because _______.

[　　]

A. they are getting richer

B. they can get the food anywhere

C. they consider the food free of pollution

D. they like home-grown fruit

（2）Which of the following statements is true to the facts about most organic produce sold in Britain?

[　　]

A. It grows indoors all year round.

B. It is produced outside Britain.

C. It is grown on family farms.

D. It is produced on large farms.

（3）What is the meaning of“the organic trend”as the words are used in the text?

[　　]

A. growing interest in organic food

B. better quality of organic food

C. rising market for organic food

D. higher prices of organic food

（4）What is the best title for this news story?

[　　]

A. Organic food--healthy, or just for the wealthy?

B. The making of organic food in Britain.

C. Organic food--to import or not?

D. Good qualities of organic food

阅读下面短文，从每题所给的四个选项中选出最佳答案.

　　In 1901, H.G. Wells, an English writer, wrote a book describing a trip to the moon. When the explorers（探险者）landed on the moon, they discovered that the moon was full of underground cities. They expressed their surprise to the“moon people”they met. In turn, the “moon people” expressed their surprise. “Why,” they asked,“are you traveling to outer space when you don't even use your inner space?”

　　H.G. Wells could only imagine travel to the moon. In 1969, human beings really did land on the moon. People today know that there are no underground cities on the moon. However, the question that the“moon people”asked is still an interesting one. A growing number of scientists are seriously thinking about it.

　　Underground systems are already in place. Many cities have underground car parks. In some cities, such as Tokyo, Seoul and Montreal, there are large underground shopping areas. The“Chunnel”, a tunnel（隧道）connecting England and France, is now complete.

　　But what about underground cities? Japan's Taisei Corporation is designing a network of underground systems, called“Alice Cities.”The designers imagine using surface space for public parks and using underground space for flats, offices, shopping, and so on. A solar dome（太阳能穹顶）would cover the whole city.

　　Supporters of underground development say that building down rather than building up is a good way to use the earth's space. The surface, they say, can be used for farms, parks, gardens, and wilderness. H.G. Wells'“moon people”would agree. Would you?

（1）The explorers in H.G. Wells' story were surprised to find that the“moon

people”________.

[　　]

A. knew so much about the earth

B. understood their language

C. lived in so many underground cities

D. were ahead of them in space technology

（2）What does the underlined word“it”（paragraph 2）refer to?

[　　]

A. Discovering the moon's inner space.

B. Using the earth's inner space.

C. Meeting the“moon people”again.

D. Traveling to outer space.

（3）What sort of underground systems are already here with us?

[　　]

A. Offices, shopping areas, power stations.

B. Tunnels, car parks, shopping areas.

C. Gardens, car parks, power stations.

D. Tunnels, gardens, offices.

（4）What would be the best title for the text?

[　　]

A. Alice Cities--cities of the future.

B. Space travel with H.G. Wells.

C. Enjoy living underground.

D. Building down, not up.

阅读理解

Dear Editor,

　　I used to be a doctor in the children's department of a hospital. Sometimes I treated children who had been poisoned by medicine for older family members. The children didn't know the medicine was dangerous; they just knew it tasted sweet. Children easily open the bottle that we now use in China.

　　Some days ago I talked about medicines with an American. He showed me a sort of plastic bottle. The design was quite simple and I'm sure our Chinese factories could produce these bottles. The top of the bottle licks but can be opened by pressing down on it while turning. This is difficult for most young children to do, though grown-ups can open these bottles very easily.

　　I'm certain that the expense of making such tops would be very small. As a doctor, I'd love to see this done. And most parents would be grateful (感激的).

Sincerely yours,

Li Hua

(1)The letter writer's job in the hospital was mainly to _________.

[　　]

A．treat sick children

B．treat poisoned children

C．give medicine to people

D．give medicine to children

(2)From the letter one can conclude that _________.

[　　]

A．some children like to take adults' medicine

B．some adults' medicines cause danger to children

C．all children like to take sweet medicines

D．all adults' medicines are dangerous to children

(3)The doctor seems to be _________.

[　　]

A．happy about China' a hospital

B．sorry for what has happened

C．eager to disclose the affair

D．anxious to solve the problem

(4)The doctor thinks that we should _________.

[　　]

A．learn from the Americans

B．buy this kind of bottle

C．produce this kind of plastic bottle

D．turn to Americans for advice

(5)The letter was written to the editor in order to ask for _________.

[　　]

A．money from the newspaper

B．the plastic bottles from the readers

C．advice from the editor

D．support from public opinion

阅读理解

　　Joe was the first to wake in the gray dawn of Christmas morning. No stocking hung at the fireplace, and for a moment she felt disappointed. Then she remembered her mother's promise, and slipping her hand under her pillow (枕头), she drew out a little crimson-covered (深红色封面) book. She knew it well, for it was that beautiful old story of the best life ever lived, and Joe felt that it was a true guidebook for any pilgrim (虔诚教徒) going the long journey. She woke Meg with a “Merry Christmas” and told her to look what was under her pillow. A green covered book appeared with the same picture inside, and a few words written by their mother, which made their one present very precious in their eyes.

　　Presently Beth and Amy woke and found their little books also, one dove coloured (灰色), the other blue; and all sat looking at and talking about them, while the east grew rosy with the coming day.

(1)Why was Joe disappointed for a moment? ________

[　　]

A．Because she couldn't find her stockings.

B．Because her stocking hung at the fireplace disappeared.

C．Because she couldn't find her parents' present.

D．Because she woke up too early.

(2)What were the four colours for the covers? ________

[　　]

A．Crimson, green, gray and blue.

B．Red, black, white and gray.

C．Green, yellow, gray and blue.

D．Crimson, green black and blue.

(3)The book was precious because ________.

[　　]

A．it was a beautiful old story

B．it was a true guidebook

C．there were a few words written by their mother

D．all of the reasons above

(4)How many girls are named in the passage? ________

[　　]

(5)Which is the best title for the passage? _________

[　　]

A．Precious Books

B．Mother's Presents

C．The Morning of a Family

D．Christmas Morning

阅读理解

　　Mr. Briggs got a job with an insurance company (保险公司) after he left school and went around visiting people in their homes to sell them life insurance. One day, after he had been working for the company for about a year, the insurance manager sent for him and said, “Mr. Briggs, I have been looking at your record as a salesman with our company, and there is one thing that surprises me about it. Why have you been selling insurance only to people over 95 years old, and why have you been giving them such generous (宽厚的) conditions? You'll ruin our company if you go on like that.”

　　“Oh, no sir,” answered Mr. Briggs at once,“ Before I started work, I looked at the figures (数字) for deaths in this country during the past ten years, and I can tell you that few people die at the age of 95.”

(1)Before he worked in an insurance company, what was Mr. Briggs? ________

[　　]

A．He was a worker.

B．He was an official.

C．He was a student.

D．He was a business man.

(2)The word“ruin”in the second paragraph means ________.

[　　]

(3)As a salesman with the company, Mr. Briggs ________.

[　　]

A．visited people to ask them to work with him

B．called on people to make them join the company

C．saw old people in order to help them

D．visited many people so as to offer insurance

(4)What was it that surprised the manager? ________

[　　]

A．Mr. Briggs sold life insurance only to 95 people.

B．Mr. Briggs sold insurance only to people of more than 95.

C．Mr. Briggs had ruined the insurance company.

D．Mr. Briggs gave people generous conditions.

(5)Which of the following is true according to the passage? ________

[　　]

A．Mr. Briggs had studied the figures for deaths for several years.

B．Mr. Briggs began to look at the figures after he started work.

C．A great number of very old people die every year.

D．The number of the very old people who died every year is small.

阅读理解

　　There are many types of reports. A report is simply an account of something that has happened. The commonest are news reports. We get them in themselves, over radio and on television. Sometimes cinemas also show us newsreels. The main purpose of a newspaper is to provide news. If you examine a newspaper closely, you will find that there are all types of news: accidents, floods, fires, wars, fashions (服装), sports, books, etc. The news covers everything that happens to people and their surroundings. Sometimes there are news items which are very amusing.

　　A news report is usually very short, except when it is about something very important, but it contains (包含) a lot of information. It is also written in short paragraphs, the first paragraph is in fact a summary (总结) of the news item. It gives all the necessary information, what, when, where, how and why. The other paragraphs give full details of the subjects. There may also be interviews with people. The words actually spoken by them are within inverted commas (引号). Often there are photographs to go with the news to make it more interesting.

(1)The easiest way to get today's news is ________.

[　　]

A．to go to the cinema

B．to watch a color TV

C．to read today's newspapers

D．to listen to the music over radio

(2)Newspapers sell well mainly because ________.

[　　]

A．they cost very little

B．they are easy to get

C．they have got pictures to go with the news

D．they provide all sorts of news in them

(3)If you want to get enough information about yesterday's traffic accident within a very short time, you'd better ________.

[　　]

A．read the first paragraph of the news report in today's newspaper

B．start from the second paragraph of the news report in today's newspaper

C．look through the whole news report in today's newspaper

D．talk with people who have seen the accident

(4)To interest more people, a news reporter ________.

[　　]

A．usually produces amusing news

B．always writes very short news reports

C．often prints pictures to go with the news

D．sometimes provides long and important news

(5)This passage mainly talks about ________.

[　　]

A．different types of reports

B．news reports

C．happenings to people and their surroundings

D．the length of a news report

阅读理解

　　The expression,“lame duck”, can be heard in almost any American town or city, especially where people discuss politics. Most often, they use it to describe a politician who has come to the end of power--a Congressman, for example, who has a few more weeks in office and will then be out of a job．

　　There are a number of ideas as to where“lame duck” came from although the picture is clear enough--a duck that has had its wings clipped, or its web feet injured, and can no longer walk or waddle(walk with short steps, bending from one side to the other) like a healthy one.

　　The term seems to have crept(move slowly and quietly with the body close to the ground) into the American language some time after the Civil War of 1861~1865. One explanation is that it came from the language of hunters who felt that it was foolish to waste power or time on a dead duck.

　　Another explanation, however, says that the expression came from England．There it was used to describe a man who lost all his money in stocks(股票交易)， was cleaned out (倾家荡产)and could not pay his debts. And-so the story does,--people showed little mercy (kindness or pity)for the poor fellow.

　　But in the United States people took the phrase to describe a congressman who failed to get reelected but still had a little time in office until his successor was sworn in (be sworn in = take office).

　　In time, the expression was used in a broader sense, generally describing any man whose days of power were coming to the end．It has often been to describe the position of an American president in the 2 years or so of his 2nd term. It is a difficult time for him, when Congress is ready to oppose him at every turn (at every moment; in every place). It may refuse to work with him simply because his days in the White House are numbered．His sun is setting. It is not a happy time. It is like old age coming on. And people, like animals, are cruel to lame ducks, ready to drive him out. Their eyes are already turned towards the new leader, the new man in command．

(1)It is likely that the expression“lame duck”________.

[　　]

A．has been widely used in the American language before the Civil War

B．has quietly come into the American language some time after the year of 1865

C．was used in the old English

D．has been used in both the USA and the UK since 1865 to express the same meaning

(2)When a person lost all his money in stocks, people ________.

[　　]

A．usually showed mercy for him

B．always has sympathy with him

C．hardly has sympathy with him

D．never drove him out

阅读理解

　　In the dark night of the desert a group of US Air Force scientists is testing a new device (设备) for guiding a missile(导弹) to its target. Designed to seek out the heat of an enemy aircraft engine, it is now going through its paces by tracing(跟踪)the movement of a flashlight waving thirty feet away in the darkness. A hundred yards away, unseen by the man, a rattlesnake sliding between the stones senses a patch of warmth. Although the snake's mechanism(机制) is small enough to be packed into a head the size of a nut, it can detect a change in temperature of one thousandth of a degree. Without a sound the snake closes in and strikes for the kill.

　　Whenever we look in the animal world we find the same story. Almost anything that man can do, nature has already done better. So, for the purpose of learning from nature, a new science called bionics has grown up. Its aim is to find out how animal's instruments work so that man can copy them for his own use.

　　Imagine being able to know a friend several miles off by his smell. Male silk moths(蛾)can do this. Their antennae(触角)are so sensitive to the chemical odor of female that they can detect their presence by picking up only one molecule (分子) of the chemical. Even with their most sensitive instruments, human cannot approach this perfection.

　　Studying beetle's(甲虫的)eyes has already paid off. A group of scientists in Germany found that a beetle can accurately(精确地) measure with its eyes the speed of a moving background．After finding out how a beetle accomplishes this scientists built a machine that operated on the same principle(原理). This instrument is able to determine the ground speed of moving aircraft with a high degree of accuracy.

(1)The writer compares the rattlesnake with a missile in order to ________.

[　　]

A．show the deadliness of the missile

B．demonstrate(论证)what bionics is

C．show that man is wiser than nature

D．demonstrate that a rattlesnake is very dangerous

(2)Study of the male silk moth might lead to a new method of ________.

[　　]

A．locating underground streams

B．making smooth cloth

C．detecting poisonous gas

D．communicating

(3)Which of the following can be used to replace the underlined word“accomplishes”?

[　　]

(4)Which of the following is NOT right

[　　]

A．Studying the eye of the beetle has helped scientists to measure speed of objects.

B．Male moths can know female moths several miles off by their smell.

C．Devices of animals discussed here serve a purpose similar to the skin of the human.

D．The military uses of bionics are one reason for developing this science.

(5)According to the passage, the goal for bionics is to ________.

[　　]

A．explain how animal devices work

B．copy animal processes with man-made machines

C．prove the usefulness of this science

D．apply(应用) science to the study of electronics

阅读理解

    The basic flag of the United States is one of the world's oldest national flags. Only the basic flags of Austria, Denmark, Great Britain, the Netherlands, Sweden, and Switzerland are older.

　　During the discovery and settlement of what is now the United States the flags of various European nations were flown over the land, as symbols of possession. Later, in the colonial and Revolutionary War Periods flags representing famous persons, places and events were flown in the American Colonies.

　　The first official flag of the United States was created by Congress on June 14,1777, It consisted of 13 alternate red and white stripes and 13 white stars in a field of blue, representing the 13 colonies that had declared their independence in 1776. Congress adopted a new flag of 15 stars and 15 stripes in 1795, to give representation to the two new states admitted into the Union, Vermont and Kentucky.

　　By 1817, there were 20 states in the Union, and it became apparent that adding one stripe for each new state would destroy the shape of the flag. As a result, Congress in 1818 restored the original design of 13 stripes and provided that each state was to be represented by one star. In 1912 President　　 William. H. Taft made the first official provision for the arrangement of the stars. He ordered that there be six even rows of eight stars each. Previously the arrangement of the starts had been left to the flagmaker's desire. The evolution of the stars and stripes reflects the growth of the United States. After the admission of Hawaii into the Union in 1959, the flag was officially changed for the 26th time since its creation. There are many government flags flown in the United States in addition to the national flag. Among them are the presidents and vice-presidents flags and those of the federal departments and some federal agencies. Each state in the Union has an official flag. The United States Navy used special flags for signaling.

(1) Why were only the flags of various European nations flown over the land during the discovery and settlement period?

[　　]

A．Because the flags were older than the national flag of the U.S.

B．Because the land was divided by these nations.

C．Because there was universal flag over the land．

D．We don't know from the passage.

(2)The first national flags of the United States ________.

[　　]

A．represented the 13 colonies which won independence in 1776

B．were flown in American colonies in 1776

C．were flown in American colonies in 1795

D．gave representation to Congress

(3)Where the stars were placed on the national flag in 1818 was decided by _______.

[　　]

(4)How many stars entered the Union between 1818and 1912?

[　　]

(5)Which of the following is NOT true according to the passage?

[　　]

A．Before 1959 the flag had been changed 25 times.

B．Each federal department has its own official flag.

C．The national flag of the U.S. had 26 stars on it after admission of Hawaii into the Union in 1959

D．By 1912, there had been 48 states in the Union.