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
If athletes want better performances, they should train at high altitudes. At higher altitudes, the body has more red blood cell
If athletes want better performances, they should train at high altitudes. At higher altitudes, the body has more red blood cell
admin
2014-10-21
58
问题
If athletes want better performances, they should train at high altitudes. At higher altitudes, the body has more red blood cells per unit volume of blood than at sea level. The red blood cells transport oxygen, which will improve performance if available in greater amounts. The blood of an athlete who trains at high altitudes will transport more oxygen per unit volume of blood, improving the athlete’s performance. Which of the following, if true, would be most damaging to the argument above, provided that the athlete’s heart rate is the same at high and low altitudes?
选项
A、Scientists have found that an athlete’s heart requires a period of time to adjust to working at high altitudes.
B、Scientists have found that the body’ s total volume of blood declines by as much as 25 percent at high altitudes.
C、Middle-distance runners who train at high altitudes sometimes lose races to middle-distance runners who train at sea level.
D、The performances of athletes in competitions at all altitudes have improved markedly during the past twenty years.
E、At altitudes above 5,500 feet, middle-distance runners often better their sea-level running times by several seconds .
答案
B
解析
本题推理可提炼为两句话:“因为每单位血液中红血球多,所以高海拔训练好” 一般地,当段落推理由单位或比例而得出一个结论时,推理成立暗含假设为“总量或数量没有发生变化”、反对主要是反对假设。(B)通过指出血液总量下降而反对了假设,所以(B)正确。(A)中的“require a period oftime”与推理并无直接关系。有人认为若如(A)所说,高海拔训练需适应一段时间,那就相当于指出了高海拔训练的缺点,所以起到了反对作用。但究竟高海拔训练带来的最终收益我们并不知道,完全有可能最终收益大于训练适应成本,所以(A)为无关选项;(C)中的“sometimes”说明不了任何问题;(D)中的“atall altitudes”把范围扩大;(E)中指出了一个“5000英尺”的特例,也并不能对上面描述的一般现象构成反对。
转载请注明原文地址:https://kaotiyun.com/show/LqtO777K
本试题收录于:
GMAT VERBAL题库GMAT分类
0
GMAT VERBAL
GMAT
相关试题推荐
SpeakerA:Well,it’sgettinglate.Maybewecouldgettogethersometime.SpeakerB:______.
Themind-successconnectionisstrong,andmanyobstaclestooursuccessarealsomental.Somepeoplerelymoreonfacts,while
Themind-successconnectionisstrong,andmanyobstaclestooursuccessarealsomental.Somepeoplerelymoreonfacts,while
Consumersshoulddo______thansimplycomplainaboutthepoorqualityofgoods.
WriteashortessayentitledFastFoodandTraditionalChineseCooking.Youshouldwriteatleast120wordsfollowingtheoutlin
AstheTitanicwassinkingandwomenandchildrenclimbedintolifeboats,themusiciansfromtheship’sbandstoodandplayed.
WhentheUnitedStatesCongresscreatedYellowstoneNationalParkin1872,thegoalwastosetasideaplacewhereAmericanscou
WhentheUnitedStatesCongresscreatedYellowstoneNationalParkin1872,thegoalwastosetasideaplacewhereAmericanscou
Themulti-billion-dollarWesternpopmusicindustryisunderfire.ItisbeingblamedbytheUnitedNationsforthedramaticris
随机试题
下列哪一选项中法院的审判行为,只能发生在开庭审理阶段?
血液凝固的主要步骤是
在房地产抵押贷款中,抵押权人一般为()。
某高校长期设置基建处,负责学校的基本建设工作,具有丰富的项目管理经验,有相应的项目管理能力,则该高校修建学生食堂应采取的项目管理模式是( )。
西岐公司2010年3月15日购入一台不需要安装设备并投入生产车间使用,取得的增值税专用发票上注明的设备价款50000元,增值税8500元。西岐公司采用年限平均法计提折旧,该设备预计使用10年,预计净残值率为4%,2011年3月25日,西岐公司将该设备出售给
证券公司为证券交易创造一个流动性较强的市场并维持市场价格的相对稳定,这指的是证券公司充当()的角色。
甲公司于2016年1月1日购入乙公司当日发行的3年期公司债券,作为持有至到期投资核算,在购买日其公允价值为60480万元,发生交易费用60万元。债券面值为60000万元,票面年利率为3%,半年期实际利率为1.34%,每半年付息一次,采用实际利率法摊销利
下列文中画横线语句断句正确的一项是()。延祐初,科举法行,乡贡、会试皆中第一,廷试为第二人。授应奉翰林文字。拜监察御史。是时仁宗在御已久,犹居东宫,饮酒常过度。祖常上书请:“御正衙立朝仪御史执简太史执笔则虽有怀奸利己乞官求赏者不敢出诸口……”
Onedayafarmer’sdonkeyfelldownintoawell.Theanimalcriedpiteously【K1】______hoursasthefarmertriedtofigureoutwh
HowtoGetPreservedasaFossil【M1】Unfortunatelythechangesofanyanimalbecomeafossilarenotverygreat,and【M2】the
最新回复
(
0
)