She took up skating at age 85, made her first movie appearance at age 114, and held a concert in the neighborhood on her 121st birthday.
　　    When it comes to long life, Jeanne Calment is the world’s recordholder. She lived to the ripe old age of 122. So is 122 the upper limit to the human life span（寿命）? If scientists come up with some sort of pill or diet that would slow aging, could we possibly make it to 150－or beyond?
　　    Researchers don’t entirely agree on the answers. “Calment lived to 122, so it wouldn’t surprise me if someone alive today reaches 130 or 135, ”says Jerry Shay at the University of Texas.
　　    Steve Austad at the University of Texas agrees. “People can live much longer than we think, ”he says. “Experts used to say that humans couldn’t live past 110. When Calment blew past that age, they raised the number to 120. So why can’t we go higher? ”
　　    The trouble with guessing how old people can live to be is that it’s all just guessing. “Anyone can make up a number, ”says Rich Miller at the University of Michigan. “Usually the scientist who picks the highest number gets his name in Time magazine. ”
　　    Won’t new anti-aging techniques keep us alive for centuries? Any cure, says Miller, for aging would probably keep most of us kicking until about 120. Researchers are working on treatments that lengthen the life span of mice by 50 percent at most. So, if the average human life span is about 80 years, says Miller, “adding another 50 percent would get you to 120. ”
　　    So what can we conclude from this little disagreement among the researchers? That life span is flexible（有弹性的）, but there is a limit, says George Martin of the University of Washington. “We can get flies to live 50 percent longer, ”he says. “But a fly’s never going to live 150 years. ”Of course, if you became a new species （物种）, one that ages at a slower speed, that would be a different story, he adds.
　　    Does Martin really believe that humans could evolve （进化）their way to longer life? “It’s pretty cool to think about, ”he says with a smile.
【小题1】 What does the story of Jeanne Calment prove to us?

A．People can live to 122.

B．Old people are creative.

C．Women are sporty at 85.

D．Women live longer than men.

【小题2】 According to Steve Austad at the University of Texas, ______.

A．the average human life span could be 110

B．scientists cannot find ways to slow aging

C．few people can expect to live to over 150

D．researchers are not sure how long people can live

【小题3】 Who would agree that a scientist will become famous if he makes the wildest guess at longevity?

A．Jerry Shay.	B．Steve Austad
C．Rich Miller	D．George Martin

【小题4】 What can we infer from the last three paragraphs?

A．Most of us could be good at sports even at 120.

B．The average human life span cannot be doubled

C．Scientists believe mice are aging at a slower speed than before.

D．New techniques could be used to change flies into a new species

No country in the world has more daily newspapers than the USA.　There are almost 2000 of them，as compared with 180 in Japan，164 in Argentina and 111 in Britain.　The quality（质量） of some American papers is quite high and their views are used all over the world.　Excellent newspapers like the Washington Post or the New York Times　have a powerful influence（影响） all over　the country.　However，the Post　and the New York Times　are not national newspapers in the sense that The Times is in Britain of Le Monde is in France，since each American city has its own daily newspaper.　The best of these give detailed（详细的）accounts of national and international news，but many tend to limit themselves to state or city news.?

Like the press（报刊） in most other countries，American newspapers report news from the “exciting” and “relaxing” to the serious.　They try to entertain people as well as give information，for they have to compete with the attraction of television.

Just as American newspapers try to satisfy all tastes，they also try to attract readers of all political parties.　A few news papers support extremist（极端主义者） groups on the far right and on the far left，but most daily newspapers try their best to attract middle-of-the-road Americans who are mainly moderate（温和的）.Many of these papers print materials by well?known journalists of different political and social views，in order to give a balanced picture.?

As in other countries American newspapers can be either responsible（负责任的） or irresponsible，but it is generally accepted that the American press serves its country well and that it has more than once exposed political scandals（丑闻），for example，the Watergate Affair（水门事件）.?

1.Which newspaper in the U.　K.　is national？?

A.?Le Monde.　　　　　　　 B.?Washington Post.?

C.?New York Times.　　　　　　 D.?The Times.?

2.Most American newspapers attract readers by carrying　　　　　 .?

A.　national news　　　　　 B.　local news?

C.　international news　　　　 D.　political news?

3.In order to win the competition with television，American newspapers have to　　　 .

A.　give information　　　 B.　give serious news?

C.　give entertainment news　　 D.　give national news?

4.Most daily newspapers attract moderate Americans by　　　　　 .?

A.　printing articles by well-known journalists of different views?

B.　supporting extremist groups?

C.　exposing political scandals?

D.　serving the country well?

 

Adults are often surprised by how well they remember something they learned as children but have never practised in the meantime. A man who has not had an opportunity to go swimming for years can ___21___ swim as well as ever when he gets back in the water. He can get on a bicycle after several decades and still    22    away. A mother who has not    23   the words for years can teach her daughter the poem that begins "Twinkle, twinkle, little star" or recite the story of Cinderella or Snow White.

　　One explanation is the    24     of over learning, which can be stated as following: Once we have learned something, additional learning increases the    25    of time we will remember it.

　　In childhood, we usually continue to practise such skills as swimming, bicycle riding long after we have learned them. We continue to listen to and    26    ourselves of poems such as "Twinkle, twinkle, little star" and childhood tales such as Cinderella or Snow White. We not only learn but  __27   .

　　The law of over learning explains why cramming (突击学习) for an examination, though it may result in a(an)    28     grade, is not a    29    way to learn a school course. By cramming, a student may learn the subject well enough to get by on the examination, but he is likely soon to forget almost everything he learned. A little over learning,    30   , is usually a good investment toward the future.

　　21. A. only                B. hardly            C. still                D. even

　　22. A. move               B. drive              C. travel              D. ride

　　23. A. thought about     B. cared for          C. showed up       D. brought up

　　24. A. result              B. law                C. rule              D. cause

　　25. A. accuracy           B. unit                  C. limit              D. length

　　26. A. remind             B. inform              C. warm             D. recall

　　27. A. recite               B. overlearn          C. research          D. improve

　　28. A. passing            B. average              C. excellent             D. discouraging

　　29. A. convenient        B. demanding       C. satisfactory        D. swift

　　30. A. at most            B. by the way        C. on the other hand  D. in the end