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Move over Methuse"的相关试题:
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Move over Methuselah. Future generations could be living well into their second century andstill doing Sudoku, if life expectancy predictions are true. Increasing by two years every decade,they show no signs of flattening out. Average lifespan worldwide is already double what it was 200years ago. Since the 1980s, experts thought the increase in life expectancy would slow down andthen stop, but forecasters have repeatedly been proved wrong.
The reason behind the steady rise in life expectancy is "the decline in the death rate of theelderly", says Professor Tom Kirkwood from Newcastle University. He maintains that our bodies areevolving to maintain and repair themselves better and our genes are investing in this process to putoff the damage which will eventually lead to death. As a result, there is no ceiling imposed by thereahties of the ageing process."There is no use-by-date when we age. Ageing is not a fixed biological process," Tom says.
A large study of people aged 85 and over carried out by Professor Kirkwood discovered that there were a remarkable number of people enjoying good health and independence in their late 80s and beyond. With people reaching old age in better shape, it is safe to assume that this is all due to better eating habits, living conditions, education and medicine.
There are still many people who suffer from major health problems, but modem medicine means doctors are better at managing long-term health conditions like diabetes, high blood pressure and heart disease."We are reaching old age with less accumulative damage than previous generations. We are less damaged," says Professor Kirkwood. Our softer lives and the improvements in nutrition and healthcare have had a direct impact on longevity.
Nearly one-in-five people currently in the UK will live to see their lOOth birthday, the Office for National Statistics predicted last year. Life expectancy at birth has continued to increase in the UK--from 73.4 years for the period 1991 to 1993 to 77.85 years for 2007 to 2009. A report in Science from 2002 which looked at life expectancy patterns in different countries since 1840 concluded that there was no sign of a natural limit to life.
Researchers Jim Oeppen and Dr. James Vaupel found that people in the country with the highest life expectancy would live to an average age of 100 in about six decades. But they stoppedshort of predicting anything more.
"This is far from eternity: modest annual increments in life expectancy will never lead toimmortality," the researchers said.
We do not seem to be approaching anything like the limits of life expectancy, says Professor David Leon from the London School of Hygiene and Tropical Medicine. "There has been no flattening out of the best of the best--the groups which everyone knows have good life expectancy and low mortalit_y"he says.
These groups, which tend to be in the higher social and economic groups in society, can live for several years longer than people in lower social groups, prompting calls for an end to inequalities within societies.
Within populations, genes also have an important role to play in determining how long we could survive for---but environment is still the most important factor.
It is no surprise that healthy-living societies like Japan have the highest life expectancies in the world. But it would still be incredible to think that life expectancy could go on rising forever. "I would bet there will be further increases in life expectancy and then it will probably begin to slow," says Tom, "but we just donTt know."
The underlined phrase "low mortality" in Paragraph 8 could best be replaced by_________
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A.short life span
B.low death rate
C.low illness rate
D.good health condition
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Often heard people complain about, why not my face, why so bad weather today, why do I livein such a poor family, why God told me ... why should we complain about it complained that it?Life was not all the best, life was not perfect, on the contrary, the ups and downs, is the routine. Do not complain, evervone's life will not be easy, but precisely because of these?twists and turns?infolding wave, acquired a colourful life.
If we can often look at the issue from another angle, you might easily find the life is still veryexciting. You can't change the face, smile, why don't you think about indulgence; you can'tchange the weather, why don't you change the mood? As the saying goes: after the storm. The sameis true of life, after training can often make life wonderful.
China, a writer came to the United States, he saw a flower of the old lady is always veryhappy, very strange. He would pick a flower asked:"Why are you always so happy?" Replied theold lady. And it made the writer stand in amazement."That Jesus was crucified is the world'sdarkest day, three days later to Easter. All the trouble to wait for three days as long as the right notto vanish into thin air?" Writer for the old lady answered and moved an old lady could look at thisfree and easy life, could see so thoroughly to life. King inventors--Edison filament do in order tofind the best materials have been done a 1,000 experiment many times and failed. Have a laugh athis neighbour, "Do you know to do 1,000 experiments have failed many times?" Edison said, "I amnot found more than 1,000 kinds of inappropriate material filament so it?" Edison failed to look atfrom another angle, he is quite sure that it can be the most suitable materials, is precisely becauseof this self-confidence, they are able to make unremitting efforts, finally successful.
People to love life, love life, to have self-confidence, it is necessary to make unremitting effortstowards the target, like Ai Qing said, "Even if we are a candle, wax should be dry before the torchashes tears; even though we are a match should be at the crucial moment there is a ray of light," ifso, will the meaning of our lives, our lives will be able to issue a strange glory. Finally, I had toremind you that in the face of setbacks, do not complain about it complained that the old, and tolearn how to transform the issue of perspective, so that life is not susceptible to "rain" by knockout.
qaat is the author's attitude towards life?
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A.Positive.
B.Indifferent.
C.Pessimistic.
D.Radical.
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When we analyze the salt salinity(盐溶度 ) of ocean waters, we find that it varies only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the subtraction of water from the ocean by means of evaporation. In this manner, the salinity is increased, since the salt stays behind. If this is carried to the extreme, of course, white salt would be left behind; this, by the way, is how much of the table salt we use is actually obtained.
The opposite of evaporation is precipitation, such as rain, by which water is added to the ocean. Here the ocean is being diluted so that the salinity is decreased. This may occur in areas of
high rainfall or in coastal regions where rivers flow into the ocean. Thus salinity may be increased by the subtraction of water by-evaporation, or decreased by the addition of fresh water by precipitation.
Normally, in hot regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation. Similarly, in coastal regions where rivers dilute the sea, salinity is somewhat lower than in other oceanic areas.
A third process by which salinity may be altered is associated with the formation and melting of sea ice. When seawater is frozen, the dissolved materials are left behind. In this manner, seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared. Of course, when this ice melts, it will tend to decrease the salinity of the surrounding water.
In the Weddell Sea, the densest water in the ocean is formed as a result of this freezing process, which increases the salinity of cold water. This heavy water sinks and is found in the deeper portion of the oceans of the world.
The purpose of mentioning the Weddell Sea is__________.
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A.to give an example of cold-water salinity
B.to point out the location of deep waters
C.to make a comparison between hot-water salinity and cold-water salinity
D.to show that the water in the Weddell Sea varies in salinity from place to place
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When I read last week that Angela Ahrendts was getting up to $68m as a welcome gift forjoining Apple, my mind skipped at once to her husband. This latest addition to her vast stash ofmoney must catapult her spouse Gregg to the very top of the global my-wife-earns-more-than-meleague table.
It is quite an achievement. I have no idea if the two of them like each other, but they havestuck it out for a long time. They met at school and he chucked his job to follow her to the UKwhen she became head of Burberry; he seems to have spent the last eight years mainly looking aftertheir three children, revamping their home and putting supper on the table for her when she finallystaggered in on her five-inch heels. I suspect the real genius of Ms Ahrendts lies less in the wayshe persuaded people to buy 22,000 raincoats with peacock feather trims than in persuadingGregg to marry her--and to stick with her ever since.
It is no longer particularly rare for women to be the main breadwinner--in the US a quarter ofwives now earn more than their husbands--but what is rarer is for such a relationship to work. A
book published last week by the journalist Farnoosh Torabi draws together data showing just howhard it is: high-earning women have difficulty finding a husband, and when they do, he is five timesas likely to be unfaithful as other husbands. The woman will probably do more than her share ofchores; though in the unusual event that he starts ironing and cooking, he is likely to end upfeeling so unmanly. Either way, divorce beckons.
If I think of my many female friends who have out-earned their husbands, a suspiciously largenumber are divorced. One friend complained that she no longer knew what her husband was for ashe neither made much money nor showed any desire to help out at home. Hardly surprisingly, hisversion of events was different: as she insisted on dominating both at work and at home, he'd beenleft un-manned and without a role.
! know of only two sets of good friends where the woman earns more and where the marriageseems solid. In one there are no children, so the two spend their spare time being nice to eachother. In the second, the man is so good at child-rearing and cooking while the woman is sohopeless around the house, so everyone seems happy.
The majority of colleagues, even very young ones, still seem to be in relationships where theman makes more. One fiercely clever young male colleague says his equally clever feministgirlfriend has told him she could never marry a man who earned less as she didn't fancy a lifespent propping up his ego.
Which of the following is not the problem when the wife earns more than her husband?
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A.The man may be more likely to be unfaithful than other husbands.
B.The woman will probably do more than her share of housework.
C.The man will feel that he is badly in need of manliness.
D.The wife may look down on her husband.
