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
职业资格
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
2015-06-17
17
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 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 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 100th 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 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 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 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
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: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。因此正确答案为B。
转载请注明原文地址:https://jikaoti.com/ti/WUG9FFFM
本试题收录于:
英语学科知识与教学能力题库教师资格分类
0
英语学科知识与教学能力
教师资格
相关试题推荐
______helpsstudentsfacilitatetheirprocessofaccumulatingvocabulary,broadeningscopeofvision,andincreasingtargetlang
Whenateacherasksstudentstodiscusshowthewriter’sideasareorganizedinthetext,he/sheintendstodevelopstudents’
Whichofthefollowingactivitiescanbeusedtogetthemainideaofapassage?
Thephoneme/v/inthefirstwordofallthefollowingphraseschangesto/f/except______.
Therearetwosyllablesintheword"motto"./u/occursinbothsyllables,butthefirstoneislongerthanthesecondbecause___
Inacomplexintegrationtask,ateacherisexpectedtodeviseaseriesofactivitieswhichare______linked.
Socialchangeismorelikelytooccurinsocietieswherethereisamixtureofdifferentkindsofpeoplethaninsocietieswhere
40yearsagotheideaofdisabledpeopledoingsportwasneverheardof.Butwhentheannualgamesforthedisabledwerestarted
AnewschemeforgettingchildrentoandfromschoolisbeingstartedbytheeducationauthoritiesinpartofEasternEngland.T
Duringtherecessionofeconomy,peoplerefusetocuttheirlossesonplummetinginvestmentbecausetheywon’t______mistakes.
随机试题
A、阿托品B、东莨菪碱C、毒扁豆碱D、有机磷酸酯类E、碘解磷定胆碱酯酶复活药
关于急性乳腺炎酿脓期治疗方法的叙述,下列哪项是正确的
关于药典及药品标准的叙述,错误的是
从1994年起,我国逐步形成了新型宏观调控体系。新的调控体系在1994~1996年()和1997年下半年以来应对亚洲金融危机、防止通货紧缩中,发挥了重要作用。
卧式内燃固定炉排蒸发量为1t/h时,出口蒸汽压力为0.7MPa,蒸汽温度为饱和温度,燃料为Ⅲ类烟煤,应采用原型设计锅炉,其型号应为( )。
外墙涂料中的( )外墙涂料具有良好的耐大气稳定性、化学稳定性、耐水性、耐霉性。
根据案例背景。回答以下问题。竣工图是工程竣工验收后真实反映建设工程项目施工结果的图样。竣工图的编制整理、审核盖章、交接验收应按国家对竣工图的要求办理,其中:各项新建、扩建、改建、技术改造、技术引进项目竣工图的负责编制人应是()。,
注册会计师李华负责审计甲公司2013年度财务报表。在审计过程中,遇到下列事项:(1)甲公司拥有3家子公司,分别生产不同的饮料产品。甲公司所处行业整体竞争激烈,市场处于饱和状态,同行业公司的主营业务收入年增长率低于5%,但甲公司董事会仍要求管理层将2013
WTO成员可以就涉及协议的任何事务向TBT委员会咨询,委员会一年召开()次会议。
根据以下资料回答下列题。2010年国有及国有控股企业工业利润占河北省T业利润的份额为()。
最新回复
(
0
)