Two scientists in California now think they can find out a person’s real age.Jef

题型：不详难度：来源：

Two scientists in California now think they can find out a person’s real age.Jeffery Bada and Patricia Masters do chemical tests on teeth.When we are born the amino acids（氨基酸）in our teeth are in one form.Then，as we grow older these amino acids change into a second form.Every year，one thousandth of the amino acids changed.So，by testing just one tooth and counting the number of amino acids in each form，Bada and Masters can work out a person’s age.They tested a tooth from the body of an Eskimo（爱斯基摩人）woman who died 1 600 years ago.From the appearance of her body，she was between 50 and 60 years old when she died.The tooth test put her age at 53.Then the Russian Government sent them a tooth from an old man in Georgia.The tooth said she was 99.Her real age was 96.The Russians are now hoping to send more teeth，from the very old people without birth certificates（出生证明书）.But there are problems.Some of the centenarians（百岁老人）have lost all their teeth.The others want to keep their teeth until they drop out naturally.So the Russian Government and the American scientists have to wait and hope.
61.Jeffery Bada and Patricia Masters believe that they can tell a person’s age according to_______.
A.an experiment on his bone
B.the shape and condition of his teeth
C.a test on the amino acids within his body
D.the changing form of amino acids in his teeth
62.According to the passage，which of the following statements is true?
A.The amino acids in an adult’s teeth may differ from those in a baby’s.
B.The number of amino acids in a 20-year-old man is different from that when he was seven.
C.Amino acids in one teeth changes without affecting their forms.
D.Scientists no

w can tell how long a person will live by testing his teeth.
63.Why are the two scientists asked to find out some very old Russians’ age?
A.Because the Government wants to know how long these old people can live.
B.Because they have no birth certificates.
C.Be

cause people who have tooth problems tend to live longer.
D.Because the Government wants to know their dates of birth and death.
64.In order to find out the exact age of some people over 100，both the Russian Government and American scientists_______.
A.should wait until all of them die
B.should pull out one of their teeth
C.have to wait for their teeth to drop out naturally
D.want to have their teeth pulled out
65.The central idea of the passage is_______.
A.the relationship between people’s teeth and ages
B.the relationship between amino acids and teeth
C.the contradiction（矛盾）between scientists and patients
D.the contradiction between the Government and the scientists

答案

61-65 DABCA

解析

61. 文章的第二句中可以找到答案。
62.文章第三句“Then,as we grow older these amino acids change into a second form.”可作为本题的答案依据。
63. “The Russians are hoping to send more teeth,from...”一句可作为本

题的依据。
64.有些老人不愿拨掉牙齿，科学家们只好等待。
65.中心概括题。

举一反三

In the early 80’s, I walked across the Burrard Bridge in Vancouver. Not alone, however. With me were more than 50,000 persons, mostly of my generation, on the Walk for Peace. Loving peace, I think, is one of three important qualities of my generation.
That desire for peace has been an important char

acteristic of my generation for a long time. I grew up in the 60’s and early 70’s. At that time, many of us took part in demonstrations（示威游行） against the Vietnam War. Many people of my generation have devoted their lives to world peace, and lately we have seen success: US and Russian nuclear weapons are half their 1980 levels and nuclear disarmament（裁减军备） is agreed upon worldwide.
Another characteristic of my generation is our participation in the “marriage revolution”. We were the first generation that had access to safe and reliable birth control. The idea of “free love” made it easier for men and women to safely express their love before marriage. The marriage revolution gave us power, especially to women, and the world was changed forever.
The most important characteristic, however, is that many of us are deeply concerned about the environment. The results of my generation’s activities can be seen everywhere.
Although not all of us have participated, it is sure that we will continue to have a large impact on North America. We are nearing 50 years old, an age where people of my generation will become successful in politics and then, who knows what changes will come.
59. Which of the following does not belong to the characteristics of the author’s generation?
A. Travelling peacefully.            B. The wish for peace.
C. Belief in the idea of “free love”.  D. Protecting the environment.
60. “My generation” may be people born between ________.
A. the 50s and 60s                             B. the 60s and 70s
C. the 70s and 80s                                  D. the 80s and 90s
61. The passage implies that ________.
A. most of the author’s generation died for world peace
B. all the countries agreed to remove the nuclear weapons
C. the demonstrations against the Vietnam War achieved success
D. some of the author’s generation may have greater influence on the country

题型：不详难度：| 查看答案

第三部分　阅读理解（共20小题；每小题2分，满分40分）
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
A
　　Learners report two main difficulties in reading, which may be linked. There are too many unknown words and as a result reading is simply not a pleasure. For some students, even reading in their own language is a chore.
　　Having a wide vocabulary is essential to making sense of written language. Of course, this is a circular argument, because the more you read the more vocabulary you learn and the more words you know the more easily you can read. Don’t make the mistake of reading with your dictionary beside you, looking up every single new or doubtful word. This is laborious and prevents you from practicing the skill of prediction.
　　Sometimes in reading you find a word you know but the sense doesn’t seem to fit in. This is not surprising because words have so many meanings and degrees of meaning. What is more, part of their meaning is shaped by the words around them. Keep looking at the surrounding words and asking yourself “what sort of meaning would make sense here?”
　　The more that people study the reading process, the better they can pass on to language learners a range of advice to choose from. People have learned to read in all kinds of ways. Here is some information that could help you plan to be a better reader in the foreign language you are studying.
　　1）Work out the general meaning first
　　When people read in a new language they often feel they must take a detailed approach, focusing in every word, particularly those they don’t know. They read as if they were using a microscope, looking carefully at each of the small pieces（the individual words）, but not necessarily seeing the whole picture at first. This is called the “bottom-up” approach. Other readers try to look first at the big picture（the “top-down” approach）, attending to individual bricks only as necessary, a process that involves some intelligent guesswork. Generally this second approach is recommended by successful learners.
　　2）Interactive reading
　　Another way of thinking about reading is to describe it as an interactive process, where the text brings something to you and you bring something to the text. Readers bring together all their knowledge of the world with what they see on the page in front of them. That is why, when reading in our own language, we don’t need to read every word. We add meaning which is not actually stated.
　　3）From supported reading to independent reading
　　Language learners start by needing considerable support as they read. Textbooks supply this support in the form of introductions that summaries the contents, glossaries, pictures, explanations of new grammar points. In your reading you need to move gradually from this support to reading more the text itself.
51．According to the author, ________.
A．looking up the dictionary is of great help for the understanding
B．reading more promotes the gaining of vocabulary
C．the more you read，the clearer the meaning is
D．the amount of vocabulary is the key to reading
52．Successful learners recommend ________.
A．trying to look first at the big picture
B．looking carefully at each of the small pieces
C．focusing on every word
D．“bottom-up”approach
53．The word “chore” in the first paragraph maybe means ________.
A．an important aspect
B．a difficult and tiring thing
C．an easy question
D．something special
54．You come across a new or doubtful word when you are reading, you can ________.
A．just miss it and let it be
B．keep looking at the surrounding words
C．look it up in the dictionary each time
D．make sense of it with the help of dictionary

题型：不详难度：| 查看答案

B
　　China is likely to surpass the U.S. to become world’s largest online game market this year, according to a recent report by market research firm iResearch. China’s online game market generated revenue(总收入) of 20.8 billion yuan($3.04 billion) in 2008, up 52.2% over the previous year. Over 80% of the revenue came from big, multiplayer online games, with the rest generated from Web games and mobile games.
　　The overall market is expected to keep growing at an average annual rate of 20% in the coming five years. And iResearch forecasts that the Chinese online market will be worth more than 68 billion yuan by 2012, which will account for almost half of the global market by then. At present, U.S., China and Korea are the world’s top three largest online game markets, making up about 29%, 27% and 21% respectively of the global online game market, according to the report.
　　U.S. game companies derive a major part of their revenue from sales of games overseas. South Korea’s online game industry generates half of its revenue from games in its home market. In China, however, most of the money comes directly from its own game players. Negatively influenced by the global economic downturn, both the U.S. and Korea markets will see a drop in game exporting, iResearch estimates.
　　In China, the enormous base and fast growing of online gamers will further boost China’s online game industry, said the report. China is currently home to 55.5 million online game players, according to the latest stats by the China Internet Network Information Center(CNNIC). In its report, iResearch found that figures for gamers under 18 and above 40 grew at their fastest rate yet last year, though it didn’t disclose specifics.
55．The second and third paragraphs show that ________.
A．The global online game market will be worth more than 136 billion yuan in 2012.
B．China’s online game market increased by 20% in 2008.
C．China’s online game market will become 60% less in 2009.
D．US, China and Korea together account for 90% of the global online game market.
56．China’s online game industry is different from that of the US and Korea because it’s ________.
A．made up of online, Web and mobile games
B．easily affected by the global economy
C．mainly based upon its home market
D．among the three largest online game markets
57．Which of the following things is mentioned as a factor in the rapid development of China’s online game industry?
A．The rapid growth of online gamers in China.
B．A drop in game imports to China.
C．The global economic downturn.
D．The development of technology in China.
58．According to the last paragraph, which of the following is TRUE?
A．CNNC and iResearch worked together on the report.
B．Gamers under 18 were one of the age groups which grew the fastest last year.
C．At present there are 55.5 million online game providers in China.
D．The statements of CNNC and iResearch are contradictory.

题型：不详难度：| 查看答案

D
　Stonehenge（巨石阵）may have been a prehistoric health center rather than a site for observing stars or a temple in honor of the dead, scientists said yesterday. New evidence unearthed at the World Heritage Site in more than 40 years suggests that the monument was a place where the diseased and injured went in groups, seeking cures.
After a two-week dig, scientists have concluded that Stonehenge was “the ancient healthcare centre of southern England” because of the existence of “bluestones”---the smaller columns of dolerite（辉绿岩）that formed an earlier stone structure.
By dating pieces of remains to around 7330BC, Tim Darvill, of Bournemouth University, and Goff Wainwright, of the Society of Amtiquaries have found that hunter-gatherers were at the site on Salisbury Plain 4,000 years earlier than thought. The first stage of Stonehenge, a round earthwork structure, was built around 3000BC. Professor Wainwright added: “I did not expect the degree of complexity we discovered. We’re able to say so much more about when Stonehenge was built and why---all of which changes our previous understanding of the monument.”
The research reveals the importance of the henge’s famous bluestones. Hundreds of bluestone chips gathered at the site have led the team to conclude that the bluestones were valued for their curing effects---the key reason that about 80 of them, each weighing up to 4 tons and a half, were dragged more than 150 miles from the Preseli Hills to Wiltshire. After years of research, Professors Darvill and Wainwright have concluded that, for thousands of years, the Preseli mountain range was home to magical health centers and holy wells.
Even today there are those who believe in the curing powers of the springs for coughs and heart disease, and people who use crystals and bluestones for self-curing. Radiocarbon tests have also revealed that the construction of the original bluestone circle took place around 2300BC, three centuries later than originally thought. Interestingly, on the same day died the “Amesbury Archer”---a sick traveler from the Swiss or German Alps who had an infected knee---whose remains were discovered about five miles from Stonehenge. The professors believe that he was a devoted religious person who was hoping to benefit from the curing powers of the monument.
63．Stonehenge is recently believed to be a place for people           .
A．to recover from poor health    B．to observe star movements
C．to hold religious ceremonies   D．to gather huge bluestones
64．What can be inferred about Stonehenge from the passage?
A．The springs could cure coughs and heart disease best.
B．The new discovery was the same as what had been expected.
C．Some huge bluestones were not produced at Stonehenge.
D．The original bluestone circle was thought to be constructed around 2000BC.
65．The sick traveler in the passage is supposed to be           .
A．a devoted religious person from Stonehenge
B．one of the earliest discoverers of Stonehenge
C．the first explorer to test the magical power of bluestones
D．a patient trying to cure his infection at Stonehenge
66．Which of the following might be the best title for the passage?
A．Stonehenge: A New Place of Interest     B．Stonehenge: Still Making News
C．Stonehenge: Heaven for Adventurers     D．Stonehenge: Still Curing Patients

题型：不详难度：| 查看答案

D
Cost of American Wars

War name	Cost of the war	Cost as a percent of annual GDP
Revolutionary War	US $ 2.2 billion (in 2002 dollars)	63%
War of 1812	US $ 1.1 billion	13%
Mexican War	US $ 1.6 billion	3%
Civil War	US $ 62 billion	104%
Spanish American War	US $ 9.6 billion	3%
World War I	US $ 190. 6 billion	24%
World War II	US $ 2.9 trillion	103%
Korean War	US $ 335.9 billion	15%
Vietnam War	US $ 494.3 billion	12%
First Gulf War	US $ 76.1 billion	1%

Notes: ① GDP → 国民生产总值
② 1 billion =" 1,000,000,000 " ③1 trillion = 1,000,000,000,000
69. Which wars cost more than a year’s worth of the GDP?

A. First Gulf War and World War I B. The Civil War and World War II

C. World War II and Revolutionary War D. Mexican War and Civil War
70. The American annual gross domestic product in 1951 was _________.

A. 2.239 trillion B.2.9 trillion C. 3, 25 trillion D. 76.1 billion

71. Which of the following is NOT true?

A. Mexican War cost more than War of 1812.

B. First Gulf War cost the least in term of the percentage of the annual of GDP.

C. World War II cost more than Korean War.

D. Mexican War cost as much money as Spanish American War.

题型：不详难度：| 查看答案