E

Researchers have just offered evidence in a study that says obesity appears to spread through social ties, much like a virus. When one person gains weight, their close friends often follow, but the finding might also offer hope.

If friends help make obesity acceptable, then might also be influential in losing the fat. The researchers note that support groups are already an effective tool in dealing with other socially influenced problems, like alcoholism.

The findings appeared in the New England Journal of Medicine, The researchers used information collected from 12,000 people. It was collected between 1971 and 2003 as part of the Framingham Heart Study.

The information was highly detailed. There was even contact information for close friends of the people in the study.

The researchers examined more than 40,000 social ties. They found that a person’s chances of becoming severely overweight increased by 57% if a friend had become obese.

Nicholas Christakis of Harvard Medical School was a lead investigator in the study. He says there is a direct causal relationship between a person getting fat and being followed in weight gain by a friend.

The study found that the sex of the friends was also an influence. In same-sex friendships, a person had a 70% increased risk of becoming obese. Men had a 44% increased risk of becoming obese after weight gain in brothers. In sisters, it was 67%. Between husbands and wives, it was a little less than 40%.

The researchers also considered the effect of where people lived in relation to each other. James Fowler of the University of California, San Diego, was the other lead investigator. He says a friend who lives a few hundred kilometers away has as much influence as one in the same neighborhood. He says the study demonstrates the need to consider that a major part of people’s health is tied to their social connections.

Both investigators say their research shows that obesity is not just a private medical issue, but a public health problem.

67. What does the underlined sentence in Para2.mean?

A. Obesity has a negative influence on a close friend.

B. Friends might also play a part in losing weight.

C. One might have a positive influence on one’s friend.

D. Friends usually don’t follow each other to lose weight.

68. Who is mostly likely to gain weight?

A. A man who has a fat brother.     

B. A husband who has a fat wife.

C. A wife who has a fat husband. 

D. A woman who a fat female friend.

69. Which of the following statements doesn’t the passage agree with?

A. You are sure to lose weight if you have a skinny friend.

B. If one gains weight, one’s friends are likely to get fat.

C. A person’s health is closely linked with his /her social relationship.

D. Even if the friend lives far away, the influence still remains.

70. The reason why the study involves both family members and friends is that _____.

A. researchers fail to find a more different sample

B. researchers have different ideas for family members and friends

C. researchers can meet these people regularly

D. researchers can compare the results

B

Have you ever been to the beautiful country of Holland and its capital Amsterdam? Anyone who has traveled to Amsterdam would probably agree on one thing: Amsterdam’s story is a tale of two cities—one during the day and a completely different one at night.

  During the day, the largest city in Holland sits quietly on the Amstel River. You can rent a bicycle, visit the Van Gogh or Anne Frank museum, or take a water taxi. But when the sun goes down, the partying begins. In the big clubs and in coffee shops, tourists gather to hang out, talk politics and smoke.

  Several areas of the city clearly show the two worlds that rule Amsterdam. And they’re all within a short taxi ride of each other. For example, Dam Square attracts daytime sightseers to its festivals, open markets, concerts and other events. Several beautiful and very popular hotels can be found there. And there’s the Royal Palace and the Magna Plaza shopping mall.

But at night party-seekers come to the square. Hip hop or funk music is heard there. So if you come, be ready to dance. The clubs don’t close down until 4 am.

And while you’re there, check out the various inexpensive ways to tour the city. Don’t worry about getting lost. Although Dutch is the official language, most people in Amsterdam speak English and are happy to help you with directions. And you’ll notice that half the people in the streets are on bicycles they rent.

  Amsterdam also has a well-planned canal system. For about 10 dollars, you can use the canal bus or a water taxi to cruise (巡游) the "Venice of the North".

 The city has a historic past. One impressive place to visit is the Anne Frank House on Nine Streets. It was there that the young Jewish girl wrote her famous diary during World War II. Visitors can view Anne’s original diary and climb behind the bookcase to the room where she and her family hid from the Nazis for two years.

59. The following means of transport are available to visitors in Amsterdam EXCEPT __________.

A. a carriage.                B. a bicycle.                 C. a canal bus.                     D. a water taxi.

60. When getting lost, a visitor can ask natives for directions in           .

A. only Dutch             B. Dutch or English              C. only English           D. Spanish and English

61. What can you learn about by visiting the Anne Frank House?

A. The happy experience of a girl survivor.      B. The glorious past of Amsterdam.

C. The hard life of the Jewish in World WarⅡ.    D. The hobbies of the Dutch.

62. The passage is intended to           .

A. call up people’s memories of World WarⅡ    

B. tell readers what A Tale of Two Cities is about

C. instruct visitors what to do and see in Holland

D. offer readers some information about Amsterdam

E

In the atmosphere.carbon dioxide.acts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun’s rays to enter but prevents the heat from escaping.

    According to a weather expert’s prediction,the atmosphere will be 3°C warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate.If this warming up took place,the ice caps in the poles would begin to melt, thus raising sea level several meters and severely flooding coastal cities.

    Also,the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere,possibly resulting in an alteration of the earth’s chief food growing zones.

    In the past,concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet.But the weather experts are now paying more attention to West Antarctic,which may be affected by only a few degrees of warming,in other words,by a warming on the scale that will possibly take place in the next fifty  years from the burning of fuels.

    Satellite pictures show that large areas of Antarctic ice are already disappearing.The evidence available suggests that a warming has taken place.This fits the theory that carbon dioxide warms the earth.

    However, most of the fuel is burnt in the northern hemisphere,where temperatures seem to be falling.Scientists conclude,therefore,that up to now natural influences on the weather have gone beyond those caused by man.The question is:Which natural cause has most effect on the weather?  

    One possibility is the variable behavior of the sun.Astronomers at one research station have studied the hot spots and ‘cold’ spots (that is,the relatively less hot spots)on the sun.As the sun rotates,every 27.5 days,it presents hotter or colder faces to the earth,and different aspects to different parts of the earth.This seems to have a considerable effect on the distribution of the earth’s atmospheric pressure,and consequently on wind circulation.The sun is also changeable over a long term:its heat output goes up and down in cycles,the latest trend being downward.

    Scientists are now finding shared relation between models of solar weather interaction and the actual climate over many thousands of years,including the last Ice Age.The problem is that

the models are predicting that the world should be entering a new Ice Age and it is not.One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia(惰性)of the earth’s climate.If this is right,the warming effect of carbon dioxide might thus be serving as a useful opposed balance to the sun’s fading heat.

72.It can be concluded that a concentration of carbon dioxide in the atmosphere would ______.

      A.mean a warming-up in the Arctic

     B.raise the temperature of the earth’s surface

      C.prevent the sun’s rays from reaching the earth’s surface

      D.explain the cause of great changes in the climate in the northern hemisphere

 73.Although the fuel consumption is greater in the northern hemisphere, temperatures there

 seem to be falling.This is _______.

       A.mainly because the levels of carbon dioxide are rising

       B.partly due to changes in the output of solar energy

       C.possibly because the ice caps in the poles are melting  

       D.only due to the effect of the inertia of the earth’s climate

74.On the basis of their models , scientists are of the opinion that  ________

A.the climate of the world should be becoming cooler

B.the new Ice Age will be delayed by the greenhouse effect

       C.the man.made warming effect helps to increase the solar effects   

       D.it will take thousands of years for the inertia of the earth’s climate to take effect

75.If the assumption about the delay of a new Ice Age is correct ,  _________       

A.ice would soon cover the northern hemisphere

B.the greenhouse effect could work in favor of the earth

C.the best way to overcome the cooling effect would be to bum more fuels

D.the increased levels of carbon dioxide could warm up the earth even more quickly

II. 完形填空 (共15题,每小题2分,共30分)

American public education has changed in recent years. One change is that increasing numbers of American parents and teachers are starting independent public school   11   charter schools (特许学校).

  In 1991, there were no charter schools in the United States. Today, more than2,300 charter schools    12    in 34 states and the District of Columbia. 575,000 students   13   these schools. The students are from 5 years of age through 18 or older.

  A charter school is   14   by groups of parents, teachers and community (社区) members, It is similar in some ways    15   a traditional public school. It receives tax money to operate just as other public schools do. The    16   it receives depends on the number of students. The charter school must prove to local or state governments that its students are learning. These governments   17    the school with the agreement, or charter that permits it to operate.

Unlike a traditional public school,    18    the charter school does not have to obey most laws which govern public schools. Local, state or federal governments cannot tell it what to  19  .

 Each school can choose its own goals and decide the ways it wants to  20  those goals. Class sizes usually are smaller than those in many traditional public schools. Many students and parents say   21   in charter schools may be more creative.

  However, state education agencies, local education-governing committees and unions are often    22    charter schools. They say these schools may receive money badly   23   by traditional public schools. Experts say some charter schools are doing well while others are struggling.

 Congress provided 200million dollars for  24   charter schools in the 2002 federal budget (预算). But often the schools say they lack enough money for their    25   .Many also lack needed space.

11. A. called       B. asked        C. known        D. said

12. A. study       B. organize      C. operate        D. perform

13. A. finish       B. attend        C. leave         D. cut

14. A. taught       B. held         C. created        D. understood

15. A. to          B. with          C. by           D. in

16. A. attention     B. amount      C. expense       D. information

17. A. buy         B. review       C. give          D. provide

18. A. besides      B. moreover     C. thus          D. however

19. A. teach        B. discuss       C. have         D. get

20. A. set          B. reach        C. settle         D. define

21. A. farmers      B. workers      C. teachers       D. soldier

22. A. against       B. for          C. in            D. with

23. A. treated       B. needed       C. earned        D. wasted

24. A. needing      B. spending     C. comparing     D. establishing

25. A. programs     B. parents       C. records       D. words

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