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
考研
In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association(NBA)listed at over seve
In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association(NBA)listed at over seve
admin
2016-01-05
36
问题
In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association(NBA)listed at over seven feet. If he had played last season, however, he would have been one of 42. The bodies playing major professional sports have changed dramatically over the years, and managers have been more than willing to adjust team uniforms to fit the growing numbers of bigger, longer frames.
The trend in sports, though, may be obscuring an unrecognized reality: Americans have generally stopped growing. Though typically about two inches taller now than 140 years ago, today’s people— especially those born to families who have lived in the U.S. for many generations—apparently reached their limit in the early 1960s. And they aren’t likely to get any taller. "In the general population today, at this genetic, environmental level, we’ve pretty much gone as far as we can go," says anthropologist William Cameron Chumlea of Wright State University. In the case of NBA players, their increase in height appears to result from the increasingly common practice of recruiting players from all over the world.
Growth, which rarely continues beyond the age of 20, demands calories and nutrients—notably, protein—to feed expanding tissues. At the start of the 20th century, under-nutrition and childhood infections got in the way. But as diet and health improved, children and adolescents have, on average, increased in height by about an inch and a half every 20 years, a pattern known as the secular trend in height. Yet according to the Centers for Disease Control and Prevention, average height—5’ 9" for men, 5’ 4" for women—hasn’t really changed since 1960.
Genetically speaking, there are advantages to avoiding substantial height. During childbirth, larger babies have more difficulty passing through the birth canal. Moreover, even though humans have been upright for millions of years, our feet and back continue to struggle with bipedal posture and cannot easily withstand repeated strain imposed by oversize limbs. "There are some real constraints that are set by the genetic architecture of the individual organism," says anthropologist William Leonard of Northwestern University.
Genetic maximums can change, but don’t expect this to happen soon. Claire C. Gordon, senior anthropologist at the Army Research Center in Natick, Mass, ensures that 90 percent of the uniforms and workstations fit recruits without alteration. She says that, unlike those for basketball, the length of military uniforms has not changed for some time. And if you need to predict human height in the near future to design a piece of equipment, Gordon says that by and large, "you could use today’s data and feel fairly confident."
We learn from the last paragraph that in the near future
选项
A、the garment industry will reconsider the uniform size.
B、the design of military uniforms will remain unchanged.
C、genetic testing will be employed in selecting sportsmen.
D、the existing data of human height will still be applicable.
答案
D
解析
细节题。最后一段Claire C.Gordon提到90%的制服和工作间仍将会适合新招人员,这就暗示了D项所提到的内容“现在的人类身高数据将来仍会适用”是正确的。另外,可以依据排除法可以知道A、B、C项不正确。
转载请注明原文地址:https://kaotiyun.com/show/zVsZ777K
0
考研英语一
相关试题推荐
Let’sbeginwiththissingle-questionexamination:Whatpercentageofcareer-orientedhighschoolseniorsareproficientin
Thankstomorethan50yearsofresearch,weknowhowtochangechildren’sbehavior.Inbrief,youidentifytheunwantedbehavio
Mostpeopledon’tenjoyfacingthedifficultsituationsthatsometimesoccurwithcoworkersintheworkplace.Suchsituationsma
Intoday’sworld,racial,ethnic,andnationalcategoriesnolongerimposefixedbarriersorunbendingtraditions.Thisisnott
Inthedaysandweeksafter9/11anumberofwritersaskedwhatthefutureoffictioncouldbeaftersucharupture.Thecomment
Whentheleadersoftheneweconomysaythey’renotinitforthemoney,that’snotjustbadforbusiness.It’sbadforeveryone
Notwoeconomiccrisesareidentical.Butthesamequestionsrecur.Howdidwegetintothismess?Howcanwegetoutofit?How
Improvinginformationtechnologyiscrucialtohelpingthetransportationindustrystrengthensystemscriticaltotheglobaleco
Parenthoodisn’tacareer-killer.Infact,economistswithtwoormorekidstendtoproducemoreresearch,notless,thantheir
Parenthoodisn’tacareer-killer.Infact,economistswithtwoormorekidstendtoproducemoreresearch,notless,thantheir
随机试题
肿瘤分期依据的是()。
监理工程师受业主委托实施全过程监理时,在建设工程设计准备阶段进度控制的任务有( )。
某工程的总承包人乙公司经发包人甲公司同意,将自己承包的部分建设工程分包给丙公司。因丙公司完成的工程质量出现问题,给甲公司造成200万元的经济损失。根据合同法律制度的规定,下列选项中,正确的是()。
某商场为增值税一般纳税,2001年8月发生以下购销业务:(1)购入服装两批,均取得增值税专用发票。两张专用发票上注明的货款分别为20万元和36万元,进项税额分别为3.4万元和6.12万元,其中第一批货款20万元未付,第二批货款36万元当月已付清。另外,先
“不懂体育的人,不应该当校长”是我国哪一位教育家的名言?()
义务教育的实施,使小学教育具有了()的特征。
在大时代背景下,一群文物修复师,默默地固守“冷宫”一隅,日复一日地打理着价值连城的“国宝”。宫墙外的世界______________,宫墙内的他们却要用几年的时间摩挲同一件文物。一座宫廷钟表上千个零件要______________,一件碎成100多片的青铜
设F(x)为f(x)的原函数,且当x≥0时,f(x)F(x)=,又F(0)=1,F(x)>0,求f(x).
China’sentryintotheWTOactuallyrepresentstheresultofathree-sidedwin-winsituation—China,theUnitedStatesandtheWT
TeachingandLearningManyteachersbelievethattheresponsibilitiesforlearningliewiththestudent.Ifalongreadinga
最新回复
(
0
)