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
外语
The age-old riddle of why many women outlive men has been solved. It’s their pumping power, British researchers have found.
The age-old riddle of why many women outlive men has been solved. It’s their pumping power, British researchers have found.
admin
2012-07-05
55
问题
The age-old riddle of why many women outlive men has been solved. It’s their pumping power, British researchers have found.
The average male heart becomes weaker【C1】______age, and by the age of 70 its power to pump blood around the body could have【C2】______by up to a quarter of its youthful strength. Unlike men, women pump just as strongly at 70 as they do at 20. 【C3】______the same period there was no age-related【C4】______in the power of the female heart,【C5】______that the heart of a healthy 70-year-old woman could【C6】______almost as well as a 20-year-olds. The【C7】______difference between the sexes might【C8】______for why women live longer.
The good news is that men of any age can【C9】______the health of their heart simply by taking more【C10】______exercise. The results are based on the【C11】______of a two-year study of a cross-section (横截面) of the British population, which【C12】______the effects of aging on the cardiovascular (心血管的) system. David Goldspink, Professor at Liverpool John Moores University, examined more than 250 men and women between 18 and 80. None of the【C13】______had a weekly exercise routine and all were【C14】______to have low fitness levels, but were【C15】______healthy. Each of them【C16】______five hours of tests to measure their blood pressure and the performance of their heart while at【C17】______and while they exercised on a treadmill (跑步机).
The researchers found that the large arteries (动脉) in the body became【C18】______and less elastic (有弹性的) with age, causing increased blood pressure. Blood flow to the muscles and skin of the limbs was also found【C19】______to decrease. These changes were found to occur earlier in men,【C20】______women caught up soon after the menopause (更年期).
【C3】
选项
A、Until
B、From
C、Over
D、By
答案
C
解析
介词辨义题。前面提到,“女性70岁的心脏和20岁时一样强健有力,而男性到70岁时,他们的心脏向全身供血的能力最多可能减少为年轻时的1/4”,此处提到“同年龄范围的女性未显示出老龄化可导致女性心脏衰弱”。over意为“在……期间,直到……完了(或过后)”,over the same period意为“在相同时期内”,符合文意。其余介词在此均不符合句意,故排除。
转载请注明原文地址:https://kaotiyun.com/show/1n57777K
0
大学英语四级
相关试题推荐
A、Thetwospeakersarefromdifferentcountries.B、Themangetsalongverywellwithhisparents.C、Britishparentsneverinterf
A、Hewantedtofollowthetraditionofhiscountry.B、Hebelievedthatitsymbolizedaneverlastingmarriage.C、Itwasthoughta
AcademicFreedomreferstotherightofteachersandresearchers,particularlyincollegesanduniversities,toinvestigatethei
AcademicFreedomreferstotherightofteachersandresearchers,particularlyincollegesanduniversities,toinvestigatethei
Pollutantsaresubstanceswhich,whenpresentathighenoughconcentrations,produceharmfuleffectsonpeopleand/ortheenviro
Pollutantsaresubstanceswhich,whenpresentathighenoughconcentrations,produceharmfuleffectsonpeopleand/ortheenviro
A、TheliberationmovementofBritishwomen.B、RapideconomicdevelopmentinBritain.C、Changingattitudestofamilylife.D、Reas
A、Itwasanindependentcountry.B、ItbelongedtoIndia.C、ItwasoneoftheBritishcolonies.D、ItwasasmallislandinthePa
随机试题
注射用水是
社会主义药学道德基本原则在药学道德中的地位是
系统性红斑狼疮的发病与下列哪种因素无关
某制药企业2005年取得销售收2000万元,当年的广告费支出为600万元,则按照有关规定,该企业2005年在计算企业所得税时,对广告费支出进行的处理方法是()。
关于对当事人及其法定代理人的缺席判决,下列哪些选项是正确的?()
“查询设计器”中的“筛选”选项卡的作用是______。
类A是类B的友元,类B是类C的友元,则下列说法正确的是()。
将E-R图转换到关系模式时,实体与联系都可以表示成______。
Inadditiontotheestablishedenergysourcessuchasgas,coal,oilandnuclear,thereareanumberofothersourcesthatweou
农民工(migrantworkers)指在城市中从事非农业工作的农业户口(agricultural一registeredresidence)工人。2013年中国的农民工总数达到2.63亿,他们主要就职于建筑业、第三产业和劳动力密集产业(laborin
最新回复
(
0
)