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阅读下面短文，掌握其大意，然后从各题所给的四个选项中，选出一个最佳答案.
People in Britain are living longer and are 1 , with the 2 that more and more money is being spent on consumer goods, 3 the latest statistics.
But while people 4 appear to be healthier and wealthier, an analysis of 5 activities suggests they are also lazier. 6 the most popular pastime is watching television, with 98 percent of homes having 7 one set and over a third having a video recorder.
Other pastimes 8 listening to music, gardening, sports, visiting friends or going out for a meal. The 56.8 million people of England, Scotland, Wales and Northern Ireland 9 an 10 12 million household pets.
Most of the homes now have central heating, washing machines, refrigerators, telephones and even cars.
Britain are also 11 more foreign holidays. United Kingdom residents took over 17 12 holidays overseas in 1986, 13 15.75 million in 1985, and the most popular destinations were 14 Spain, France and Greece.
More people are eating meals out and 15 lifestyles have changed, the consumption of take--away meals, convenience foods and so--called fast food has also 16 . Over the past 25 years, consumption of 17 coffee, processed foods, fruit and vegetables has risen 18 home consumption of beef, lamb, bread, potatoes, butter, sugar and tea has 19 .
Alcohol consumption is continuing its rise but the types of drinks taken has changed. Beer remains the most popular, but lager（淡啤酒）now 20 more than half of beer sales and there has been a switch from whisky to other spirits.
And those of us who survive and prosper can expect to live to the age of 71 for men and 77 for women--a year longer than in 1985.
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Even if we have an extremely healthy diet and lifestyle, the human body is programmed to wear out at a maximum of about 120 years, and usually less. We all have a biological clock inside us which determines the moment when our organs cease to function properly. This is because our cells have stopped renewing themselves and our body can no longer repair itself. This is also the moment when we are more likely to begin to suffer from the diseases of old age such as arthritis and Alzheimer’s. However, rapid advances in DNA research are beginning to throw light on the secrets of the ageing process. By the end of this century we could literally have the power of life over death.
Although it has long been accepted that humans have a fixed lifespan, it is also a fact that certain other organisms, such as reptiles and amphibians, appear to live indefinitely. The only reason we do not see 500-year-old alligators is because in the wild their lives are always in danger, from man, from pollution and from other animals. When they are kept in zoos they do not seem to age at all after they are fully grown. The same is true of some species of fish, which grow indefinitely and show no signs of ageing. The existence of animals with no fixed lifespan seems to indicate that an age gene really does exist. It is this gene which scientists are searching for, which may delay or repair damage to the body caused by ageing.
Another new area of research involves the oxidation（氧化） theory, which says that ageing is caused by the same process that makes iron rust. In controlled experiments, the lifespans of certain animals were shown to be lengthened with anti-oxidants; for example, the lifespan of mice can be increased by 30%. Antioxidants are already being used in face creams and other cosmetics, and they are likely to play an important part in keeping people physically young.
Perhaps the most immediate advance we are likely to see in the battle to halt（停止）the ageing process will be organ replacement. By the year 2020 it is likely that we will be replacing injured bones or even organs like livers and kidneys with ones “grown” in laboratories. By 2050 perhaps every organ in the body, except the brain, will have become commercially available. Recent experiments also show that it may one day be possible to “grow” new organs inside our body to replace worn-out ones, something which lizards and alligators already do.
Suddenly immortality（不死，不朽） seems within reach. We can begin to imagine a future where we are born, we grow to maturity, but we never grow old and die. But do we really want to live forever?
【小题1】 When all humans reach a certain age, .
| A．they suffer the effects of their diet and lifestyle |
| B．the organs stop to perform appropriately |
| C．their cells continue to renew themselves |
| D．they develop arthritis and Alzheimer’s |
| A．alligators are in danger in the wild because of the threat from man, pollution and other animals |
| B．it is widely accepted that humans have a fixed lifespan |
| C．there exists an age gene which may control ageing |
| D．the age gene damages the body |
| A．live for a period of time without a fixed end |
| B．live without a clear aim |
| C．live in an uncertain way |
| D．live without being fully grown |
| A．by 2050 we might have most of our worn-out organs replaced with new ones commercially |
| B．never can the ageing process be avoided |
| C．livers and kidneys are sure to be grown in laboratories by the year 2020 |
| D．lizards and alligators grow new organs inside their body to replace worn-out ones |
| A．DNA researches show how our cells renew themselves. |
| B．Anti-oxidants are likely to play an important part in keeping people young. |
| C．How our biological clock works? |
| D．Eternal（永恒的） youth: new developments in anti-ageing research. |
| A．a future where we are born, we grow to maturity, but we never grow old and die is on its way |
| B．he is uncertain whether we can live forever |
| C．it remains to be seen whether immortality is a blessing or a curse |
| D．immortality is no longer a dream |
Even if we have an extremely healthy diet and lifestyle, the human body is programmed to wear out at a maximum of about 120 years, and usually less. We all have a biological clock inside us which determines the moment when our organs cease to function properly. This is because our cells have stopped renewing themselves and our body can no longer repair itself. This is also the moment when we are more likely to begin to suffer from the diseases of old age such as arthritis and Alzheimer’s. However, rapid advances in DNA research are beginning to throw light on the secrets of the ageing process. By the end of this century we could literally have the power of life over death.
Although it has long been accepted that humans have a fixed lifespan, it is also a fact that certain other organisms, such as reptiles and amphibians, appear to live indefinitely. The only reason we do not see 500-year-old alligators is because in the wild their lives are always in danger, from man, from pollution and from other animals. When they are kept in zoos they do not seem to age at all after they are fully grown. The same is true of some species of fish, which grow indefinitely and show no signs of ageing. The existence of animals with no fixed lifespan seems to indicate that an age gene really does exist. It is this gene which scientists are searching for, which may delay or repair damage to the body caused by ageing.
Another new area of research involves the oxidation（氧化） theory, which says that ageing is caused by the same process that makes iron rust. In controlled experiments, the lifespans of certain animals were shown to be lengthened with anti-oxidants; for example, the lifespan of mice can be increased by 30%. Antioxidants are already being used in face creams and other cosmetics, and they are likely to play an important part in keeping people physically young.
Perhaps the most immediate advance we are likely to see in the battle to halt（停止）the ageing process will be organ replacement. By the year 2020 it is likely that we will be replacing injured bones or even organs like livers and kidneys with ones “grown” in laboratories. By 2050 perhaps every organ in the body, except the brain, will have become commercially available. Recent experiments also show that it may one day be possible to “grow” new organs inside our body to replace worn-out ones, something which lizards and alligators already do.
Suddenly immortality（不死，不朽） seems within reach. We can begin to imagine a future where we are born, we grow to maturity, but we never grow old and die. But do we really want to live forever?
1. When all humans reach a certain age, .
A．they suffer the effects of their diet and lifestyle
B．the organs stop to perform appropriately
C．their cells continue to renew themselves
D．they develop arthritis and Alzheimer’s
2. The purpose of showing the case of alligators is to prove .
A．alligators are in danger in the wild because of the threat from man, pollution and other animals
B．it is widely accepted that humans have a fixed lifespan
C．there exists an age gene which may control ageing
D．the age gene damages the body
3.The underlined phrase “live indefinitely” in Paragraph 2 probably mean .
A．live for a period of time without a fixed end
B．live without a clear aim
C．live in an uncertain way
D．live without being fully grown
4.It can be inferred from Paragraph 4 that .
A．by 2050 we might have most of our worn-out organs replaced with new ones commercially
B．never can the ageing process be avoided
C．livers and kidneys are sure to be grown in laboratories by the year 2020
D．lizards and alligators grow new organs inside their body to replace worn-out ones
5. What is the main topic of this passage?
A．DNA researches show how our cells renew themselves.
B．Anti-oxidants are likely to play an important part in keeping people young.
C．How our biological clock works?
D．Eternal（永恒的） youth: new developments in anti-ageing research.
6.By saying “But do we really want to live forever”, the author may probably mean .
A．a future where we are born, we grow to maturity, but we never grow old and die is on its way
B．he is uncertain whether we can live forever
C．it remains to be seen whether immortality is a blessing or a curse
D．immortality is no longer a dream
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It was a bright Saturday morning in the late fall. I had stopped at a café to enjoy a cup of coffee and__1__ the morning newspaper. Suddenly, I__2__ a hand on the back of my jacket and heard someone say, “Hey Steve! How ya doin’?”
__3__ up, I saw a boy wearing a mechanic’s uniform worn by employees of the gasoline station next to the café. He looked__4__, but, at first, I was unable to__5__ where we had met.
He also held a cup of coffee, so I asked him to join me. Very soon, his__6__ and probably my coffee began to thaw(解冻) out my__7__.
Five years earlier, he had been traveling home late on a February night. A fierce__8___ had arrived that afternoon, and by midnight, the snowdrifts were getting__9___. He recalled__10__ a drift just down the road from my house.
He had walked to my house for__11__. I had taken my pickup and a tow-rope and__12__ his car out of the snowdrift and up to the highway where maintenance(维护) trucks had__13___ away the snow.
This has been a__14__ occurrence here during the winter. I cannot__15__ the times someone has also pulled my car from a snowdrift.
___16__, it was an unforgettable experience for him, and his memory of our unexpected meeting in a snowstorm__17__ my entire day.
Leo Buscaglia wrote, “Too often we underestimate(低估) the__18_ of a touch, a smile, a kind word, a listening ear, an honest compliment(赞扬), or the smallest act of__19__, all of which have the potential to turn a__20__ around.”
1. A. preview B. scan C. order D. buy
2. A. noticed B. got C. caught D. felt
3. A. Looking B. Standing C. Rising D. Glaring
4. A. sensitive B. friendly C. familiar D. grateful
5. A. reflect B. determine C. regain D. recall
6. A. story B. experience C. appearance D. greetings
7. A. heart B. feeling C. memory D. wonder
8. A. sandstorm B. snowstorm C. hurricane D. rainfall
9. A. high B. slippery C. thin D. deep
10. A. blocking B. hitting C. knocking D. crashing
11. A. help B. advice C. emergency D. shelter
12. A. pulled B. dragged C. pushed D. dug
13. A. collected B. cleared C. threw D. melted
14. A. basic B. common C. forgettable D. practical
15. A. count B. keep C. master D. predict
16. A. Besides B. Therefore C. However D. Otherwise
17. A. covered B. influenced C. brightened D. filled
18. A. meaning B. relation C. value D. power
19. A. caring B. offering C. sharing D. forgiving
20. A. course B. fate C. truth D. life
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