1.

There is nothing more possible than a new hip or knee that can put the spring back inyour step.Patients receiving joint implants(移植）often are able to resume many of thephysical activities they love,even those as vigorous as tennis and hiking.No wonder.then,that joint replacement is growing in popularity.

In the United States in 2007,surgeons performed about 806,000 hip and knee implants(the joints most commonly replaced),double the number performed a decade earlier.Though these procedures have become routine,they are not failure free.

implants must sometimes be replaced,said Dr.Henrik Malchau,an orthopedic surgeon(矫形外科医生）at Massachusetts General Hospital in Boston.A study published in2007 found that 7 percent of hips implanted in Medicare patients had to be replaced withinseven and a half years.

The percentage may sound low,but the finding suggests that thousands of hip patients eventually require a second operation,said Dr.Malchau.Those patients must endure additional recoveries,often painful,and increased medical expenses.The failure rate should be lower,many experts agree.Sweden,for instance,has a failure rate estimated to be a third of that in the United States.Sweden also has a national jointreplacement registry,a database of information from which surgeons can learnhow and why certain procedures go wrongA registry also helps surgeons learn quickly whethera specifictype of implant is particularly problematic,"Every country that has developed aregistry has been able to reduce failure rates."

“Significantly,"said Dr.Daniel Berry,chief of orthopedic surgery at the Mayo Clinicin Rochester,Minn.

A newly formed American Joint Replacement Registry will begin gathering data fromhospitals in the next 12 to 18 months.It's good news for those who are considering replacing a knee or hip.1.What is the problem with hip or knee replacements in the U.S.?（）

2. My secretary usually opens my post__________ it’s marked“private”．

3.根据以下资料，回答9-12题。The year 2000 will bring big changes in communication．Cell phones will be small enough to carry in your pocket．Videophones will let you see the person you are talking to on the phone．Tiny hand size computers will know your favorite subjects．The Internet and email will be everywhere． 　　Technologists believe 2000 will be the year of video messaging．You will be able to see whom you're talking to. 　　Also in the near future small wireless boxes will pick up information from satellites．In 5 years, computers won't need to be connected through wires. 　　All of this will be good for rural areas and countries that don't have cable or telephone now． 　　In 20 years you may only need to think about something and the computer will do it. 　　Constance Hale is the author of Sin and Syntax, "I believe that email has been an incredible boon to communication．People are writing today where they would have been telephoning yesterday．So people are engaging with words more than they have for the last couple generations." If people use email and the Internet more, it could make people better readers and writers．Some people think the most important part of communication is to make people understand each other better．Will technology make that easier? 　　The translator also comes in handy in medical emergencies．Tam Dinh says, "Where people are injured it's always important to get as much information as quickly as possible." 　　Bob Parks is an Associate Editor of Wired Magazine, "Bob's morning begins at about 6:45 am．and Bob is kind of mad, because Bob usually gets up at around 7:15 and likes to cut it close with his morning commute, but I look at my radio and it says that there's a traffic jam on 101 South and I'm gonna need an extra 1/2 hour．And so my radio has got a net connection, wireless net connection as well as a good old power cord to the wall and it has received notice that there's a traffic jam and it has calculated an extra 1/2 hour commute time." 　　Some day everything may be connected to the Internet．Your refrigerator will add milk to your Internet grocery list when the date on the carton has passed．Light bulbs will be ordered before they burn out. 　　It's fun to try to guess the future．Usually the predictions are wrong．The one thing we know for sure is that we can't imagine how technology will change.12 Why did Bob Parks radio wake him up 1/2 hour earlier than usual?

4.

I entered St.Thomas's Hospital as a medical student at the age of 18 and spent fiveyears there.I was an unsatisfactory student,for my heart was not in it.I had always wanted to be a writer,and in the evenings,after my tea.iwrote andread.Before long,1wrote a novel,called Liza of Lambeth,which I sent to apublisher and was accepted,Itappeared during my last year at the hospital and had something of a success.I felt I couldafford to give up medicine and make writing my profession:so,three days after I graduatedfrom the school of medicine,1 set out for Spain to write another book.Looking back now.and knowing the terrible difficulties of making a living by writing,I realize I was taking afearful risk.

The next ten years were very hard,and I earned an average of t100 a year.Then Ihad a bit of luck.The manager of the Court Theatre put on a play that failed.The nextplay he arranged to put on was not ready,and he was at his wit's end.He read a play ofmine and,though he did not much like it.he thought it might just run for the six weekstill the play he had in mind could be produced.It ran for fifteen months.Within a shortwhile,I had four plays running in London at the same time.Nothing of the kind had everhappened before.I was the talk of the town.4.for the first ten years of his writing career after his graduation,the author earned an average of £100 a year .which was（）

5.A teacher who is______ to the needs of individual student is sure to achieve some success.

6.Eating an apple a day doesn' t keep the doctor away, but it does reduce the amount of trips youmake to the drug store per year. That ' s according to a new study that investigates whether there's any truth in the old saying.A team of researchers led by Dr Matthew Davis, of the University of Michigan School of Nursing,asked 8,399 participants to answer survey questions about diet and health. A total of 753were apple eaters, consuming at least 149g of raw apple per day. The remaining 7,646 were classedas non-apple eaters. When both groups answered questions on trips to the doctor and trips to thedrug store per year,the apple eaters were found to be 27% less likely to visit the druggist for drugs.Trips to the doctor were not significantly affected by apple consumption, though. "Evidence doesnot support that an apple a day keeps the doctor away. However, the small number of US adultswho eat an apple a day does appear to use fewer prescription medications," the study concludes.Apple eaters were also found to be less likely to smoke and be more likely to have a highereducational attainment than non-apple eaters. While apples do not compete with oranges, theydocontain some immune (免疫的) system-increasing vitamin C, which may be why apple-eaters visit the druggist less. With over 8mg of vitamin C per medium-sized fruit, an apple can provide roughly 14% your daily recommended intake.Previous studies have also linked apple consumption to a lower risk of Type 2 diabetes (二型糖尿病) ,improved lung function and a lower risk of colon (结肠) cancer.How many non-apple eaters answered survey questions in the research?

7.完形填空Have you ever had to decide whether to go shopping or stay home and watch TV on a weekend? Now you21do both at the same time. Home shopping television networks(网络) have become a22for many people to shop without23having to leave their home.　　Some shoppers are24of department stores and supermarkets—fighting the crowds, waiting in long lines, and sometimes having slight25of finding anything they want to buy. They’d rather sit quietly at home in front of the TV set and watch a friendly announcer describe a product26a model shows it. And they can shop around the clock, buying something27by making a phone call.　　Department stores and even mail order companies are28to join in the success of home shopping. Large department stores are busy29their own TV channels(频道) to encourage TV shopping in the future. Customers can ask questions about products and place30, all through their TV sets.　　Will shopping by television31take the place of shopping in stores? Some industry managers think so.32many people find shopping at a real store a great enjoyment. And for many shoppers, it is still important to33or try on dresses they want to buy. That’s34specialists say that in the future, home shopping will35together with store shopping but will never entirely replace it.
23（）

8.This is not her kite,but___

9.However, Dr.Stokoe did not give up. ____, he started the Linguistics Research Program in 1957.填入____处的最佳答案是()。

10.Harry Potter fans will instantly recognize the snowy owl as Harry’s famous companion.Hedwig，but these beautiful and powerful owls are easily recognizable not for their magicalassociations，but for their large size and striking white feathers.Snowy owls are，in fact，theonly white owl，and they are a highly sought after species for many birdwatchers to add to theirlife lists.Foods：Small mammals，birds，fish.Habitat and Migration：Snowy owls are found in far northern latitudes including tundra，avasttreeless frozen region in the Arctic.Their breeding grounds(繁殖地)are in the Arctictundra，and they migrate south throughout Canada during the winter.In exceptionally severewinters or whenfood supplies are scarce，these owls can appear much further south than theirnormal range.While principally a North American bird.they can also migrate to the northernareas of Europe and Asia.Behaviour：Snowy owls，like aⅡowls，are powerful animal hunters that are active mostlyat night but Call bunt and feed during the day，especially when food supplies are low.Theseowls will rest on the ground or on rocks，stumps and other low favourable points.Males can befierce whendefending the nest and both genders will also perform an“injured bird”act totempt animal invadeTs to go away from the nest.Reproduction：Snowy owls may incubate(孵卵)3—10 eggs for 30—34 days，or theincubation may be done primarily by the female.The baby owls remain in the nest for 14—21days and will attempt their first flight when they are 42—58 days old.Mated pairs will raiseone group of young birds per year unless food supplies are inadequate and then no eggs may beproduced.For snowy owis，one way to detend their nest is.

11.

根据以下资料，回答46-60题。

Number sense is not the ability to count．It is the ability to recognize a46in number．Human beings are born with this ability．47, Experiments show that many animas are, too．For example, many birds have good number sense．If a nest has four eggs and you remove one, the bird will not48．However, if you remove two, the bird49leaves．This means that the bird knows the50between two and three.

Another interesting experiment showed a bird’s51number sense．A man was trying to take a photo of a crow(乌鸦) that had a nest in a tower, but the crow always left when she saw him coming．The bird did not52until the man left the tower．The man had an53．He took another man with him to the tower．One man left and the other stayed, but they did not54the bird．The crow stayed away until the second man left, too．The experiment was55with three men and then with four men．But the crow did not return to the nest until all the men were56．It was not until five men went into the tower and only four left that they were57able to fool the crow.

How good is a human’s number sense? It’s not very good．For example, babies about fourteen months old almost always notice if something is taken away from a58group．But when the number goes beyond three or four, the children are59fooled.

It seems that number sense is something we have in common with many animals in this world, and that our human60is not much better than a crow’s.50A.distance,B.range,C.difference,D.interval

12. Several novels by Mo Yan __________ into English so far．

13.

When we walk through the city,we,all experience a kind of information overload(超载）。but we pay attention only to those that are,important to us.We don't stop,we keepour faces expressionless and eyes straight ahead,and in doing so,we are not just protecting ourselves, but are,avoiding overloading other people as well.

We make use of stereotypes(刻板的模式）as convenient ways to make quick judgmentsabout situations and people around us.They may not always be accurate(精确的），andthey can often be dangerously wrong,but they are used regularly.

The problem with the stereotypes is that they restrict(限制）experience.,By using limited clues(线索）to provide us with a rapid opinion of other people on places we may choose to limit our communication.We may decide not to go to certain places because we believe.they will not offer something weenjoy.

In the city ,styles of dress are particularly important with regard to （关于）self-presentation,Different groups often use clearly identifiable(可辨认的）styles of clothes so thatthey can be easily recognized.It is becoming increasingly.common for brand names to beplaced on the outside of clothes,and this labeling(标签）makes it easy to send out information about fashion and price instantly(马上）lets other tell at a distance whether n individual has similar tastes and is a suitable person to associatewith

In England,where social grouping or classcontinues to make social distinctions(区分），clothes,hairstyles,people's pronunciation and the manner of speaking are all clues toour social group.Class distinctions tend to be relatively fixed,although in the citywhere greater variety is permitted.they are more likely to he secondary determining factorsfriendship and association.2.according to the passage,the main disadvantage of using stereotypes is that, they（）

14.The Wilsons live in___A-shaped house near the coast.It is___17th century cottage.

15.The ancient Egyptians are supposed _____rockets to the moon.

16.根据以下资料，回答70-73题。 　　Social customs and ways of behaving change．Things which were considered impolite many years ago are now acceptable．Just a few years ago, it was considered impolite behaviour for a man to smoke on the street．No man who thought of himself as being a gentleman would make a fool of himself by smoking when a lady was in a room. 　　Customs are also different from country to country．Does a man walk on the left or the right of a woman in your country? Or doesn't it matter? What about table manner? Should you use both hands when you are eating? 　　The Americans and the British not only speak the same language but also share a large number of social customs．For example, in both America and England people shake hands when they meet each other for the first time．Also, most Englishmen will open a door for a woman or offer their seat to a woman, and so will most Americans．Promptness is important both in England and in America．That is, if a dinner invitation is for 7 o'clock, the dinner guest either arrives close to that time or calls up to explain his delay. 　　The important thing to remember about social customs is not to do anything that might make other people feel uncomfortable -- especially if they are your guests．There is an old story about a man who gave a dinner party．When the food was served, one of the guests started to eat his peas with a knife．The other guests were amused or shocked, but the host calmly picked up his knife and began eating in the same way．It would have been bad manners to make his guest feel foolish or uncomfortable.73 The writer of this article may agree with which of the following?

17.Themarket is a concept.If you are growing tomatoes in your backyard for sale you areProducing for the market.You might sell some to your neighbour and some to the managerof the local supermarket.But in either case,you are producing for the market.Your efforts are being directed by the market.If people stop buying tomatoes,you will stop producing them.If you take care of a sick person to earn money,you are producing for the market.If your father is a steelworker or a taxi driver or a doctor or a grocer(杂货商），he is producing goods or service for the market.When you spend your income,you are buying things from the market.You may spend money in stores,supermarkets and gas stations.Still you are buying from the marketWhen the local grocer hires you to drive the delivery truck,he is buying your labor in the labour market.The market may seem to be something abstract(抽象的）。But for each person or businessman who is making and selling something,it is real.If nobody buys your tomatoes,itwon't be long beforeyou get the message.The market is telling you something.It's tellingyou that you are using energies and resources in doing something the market doesn't wantyou to do!All of the following acts are producing for the market EXCEPT （）

18.

Passage One

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. （81）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.According to the passage what helps to explain why the population problem has come on _____ all of a sudden ?

19.It was sunrise on an August morning when the captainand his crew cast their netssome 50 miles south of Louisiana in the Gulf of Mexico.As the net was pulled over,thecontents poured out followed by excited cries of"Coins!Coins!"The fishermen quickly realized they had realized a fisherman's dream:sunken treasure!And not just any treasure,but early American silver dollars that had gone down 210 years earlier.In 1784,at the end of the American Revolutionary War,a heavily armed ship wasbound for the port of New Orleans.On board was a fortune in Spanish Silver Dollars.Hundreds of thousands of them were loaded for the trip to New Orleans,yet not a singleone arrived.With no survivors from the ill-fated voyage,historians can only guess at whathappened.Some say powerful storms took her down while others speculate it was treasurehungry pirates(海盗）。Whatever happened,the secret-along with a treasure valued near＄100,000,000 in today's dollars-was sent to a watery gravesome 300 feet below theocean's surface.Spanish Silver Dollars were the favorite coins of colonial Americans.Widely used andaccepted as payment in the thirteen colonies,the United States government gave them thestatus of official legal tender.Unfortunately,even though they were struck in large quantities,not many of them survive today.After the Civil War,the government withdrew themfrom circulation and they were melted down.Due to the historic discovery of this treasure,GovMint.com is releasing these coins tothe public for an amazingly low price.For a limited time,those authentic silver dollars arepriced at$49 plus shipping and handling-a dramatic reduction from the market price ofthis coin anywhere else worldwide.What happened to the ship heading for New Orleans in 1784?（）

20. 根据以下材料，回答48-51题 The strange close understanding between twins is a familiar enough phenomenon．Often theyseem to understand each other and share each other’s emotions to such an extent that one suspectssome kind of thought communication． 　　What is not so widely known is that this special relationship often acts as brake on twins’intellectual development．As they are partly isolated in their own private world，twins communicate lesswith adults than do other children．The verbal ability of a four—year—old twin is typically six monthsbehind that of a non-twin．The problem can be particularly severe in an underprivileged family，aone-parent family for example，where there is little stimulation for children anyway． 　　Such children，while capable of mutual comprehension in a private language，often remainincomprehensible to outsiders and thus at a severe educational disadvantage．The only solution tothe problem，cruel though it may seem，is to separate the twins thus forcing them to acquire ordinaryspeech helped and guided by sympathetic parents and teachers．The writer mentions all of the items listed below EXCEPT．