首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
财经
Move over Methuselah. Future generations could be living well into their second century and still doing Sudoku, if life expectan
Move over Methuselah. Future generations could be living well into their second century and still doing Sudoku, if life expectan
admin
2015-05-10
73
问题
Move over Methuselah. Future generations could be living well into their second century and still 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 200 years ago. Since the 1980s, experts thought the increase in life expectancy would slow down and then 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 the elderly", says Professor Tom Kirkwood from Newcastle University. He maintains that our bodies are evolving to maintain and repair themselves better and our genes are investing in this process to put off the damage which will eventually lead to death. As a result, there is no ceiling imposed by the realities of the aging process. "There is no use-by-date when we age. Aging 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 modern 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 birthday, the Office for National Statistics predicted last year. Life expectancy has continued to increase in the UK — from 73.4 years for the period 1991 to 1993 to 77.83 years for 2007 to 2009. A report in 2002 which looked at life expectancy pattern in different countries since 1840 concluded that there was no sign of natural limits to life.
Researchers Jim Oeppen and Dr. James 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 stopped short of predicting anything more.
"This is far from eternity: modest annual increments in life expectancy will never lead to immortality," 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 Health and Medicine. "There has been no flattening out of the best of the best - the groups which everyone knows have good life expectancy and low mortality," 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 don’t know."
The underlined phrase "low mortality" in Paragraph 8 could best be replaced by "______".
选项
A、short life span
B、low death rate
C、low illness rate
D、good health condition
答案
B
解析
该题问的是第八段中的划线词可以被下列哪个选项替换?A项是较短的寿命;B项是较低的死亡率;C项是较低的生病率;D项是好的健康状态。从字义来看,mortality是死亡,致命的意思,因此划线词就是较低死亡率的意思;与B选项含义最为接近。另外从语境来看,这是由and连接的两个并列成分,good life expectancy and low mortality,并列的成分前后含义应该接近,前面说的是较长的寿命,刚好和后面的较低死亡率同义转换。
转载请注明原文地址:https://kaotiyun.com/show/PkpJ777K
本试题收录于:
英语题库银行系统招聘考试分类
0
英语
银行系统招聘考试
相关试题推荐
MoveoverMethuselah.FuturegenerationscouldbelivingwellintotheirsecondcenturyandstilldoingSudoku,iflifeexpectan
MoveoverMethuselah.FuturegenerationscouldbelivingwellintotheirsecondcenturyandstilldoingSudoku,iflifeexpectan
Therewasatimeinmylifewhenbeautymeantsomethingspecialtome.IguessthatwouldhavebeenwhenIwasaboutsixorseve
Therewasatimeinmylifewhenbeautymeantsomethingspecialtome.IguessthatwouldhavebeenwhenIwasaboutsixorseve
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.Onthecontrary,boththeirknowledgeandexperienc
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.Onthecontrary,boththeirknowledgeandexperienc
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmunizedfrombirthagainstmanyofthemostdangerousd
TheSpanishGovernmentissoworriedaboutthenumberofyoungadultsstilllivingwiththeirparentsthatithasdecidedtohel
TheSpanishGovernmentissoworriedaboutthenumberofyoungadultsstilllivingwiththeirparentsthatithasdecidedtohel
随机试题
微机中的I/O接口卡位于______之间。
吸气性呼吸困难表现为
法人终止的原因有( )。
如图所示,圆形区域内有垂直于纸面向里的匀强磁场,一个带电粒子以速度v从A点沿直径AOB方向射入磁场,经过△t时间从C点射出磁场,OC与OB成60°角。现将带电粒子的速度变为,仍从A点沿原方向射入磁场,不计重力,则粒子在磁场中的运动时间变为()。
结合教学实际说明怎样才能上好一节课。
2010年四川省电力的人均生活消费量约相当于全国平均水平的:
对着电视画面拍照,应关闭照相机闪光灯和室内照明灯,这样照出的照片画面更清晰。这是因为()。
能把汇编语言源程序翻译成目标程序的程序称为
Repressionofpainfulmemoriesissometimescalled"willedforgetting."Yettrueforgettingis(i)______thanthephenomenonofre
Someconsumerresearchersdistinguish【C1】______"rational"motivesand"emotional"(or"non-rational")motives.Theyusetheter
最新回复
(
0
)