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
In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association (NBA)listed at over sev
In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association (NBA)listed at over sev
admin
2011-06-29
53
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 Chum-lea 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
由最后一段的最后一句话,“…you could use today’s data…”,可知D选项符合题意。
转载请注明原文地址:https://kaotiyun.com/show/Uq6O777K
0
考博英语
相关试题推荐
Lookatthechartbelow.ItshowstheGDPsofthreecountriesduring8years.Whichyeardoeseachsentencebelowthechartdesc
TheUnitedStateswastryinghardtosmoketheenemyoutoftheholesinthetargetcountry.
Surprisinglyenough,modernhistorianshaverarelyinterestedthemselvesinthehistoryoftheAmericanSouthintheperiodbefo
Thesuggestedcausesofagivenphenomenoncannotalwaysbeindependentlyobserved,andsoitishardto______thepossibility
Atthefall2001SocialScienceHistoryAssociationconventioninChicago,theCrimeandJusticenetworksponsoredaforumonth
TheChineseworlddivingchampionwas______fromthenationalteam,whichhasbeenfront-pagereportedinthecountryforsever
DearSirs,IamwritingtoyourofficetoattempttodeterminewhyIhaveencouragedsomanyobstaclestoreceivingmyproper
TheAerospaceBicycleThatFelltoEarth(1)AradicalnewbicyclehaditsfirstpublicshowingattheNationalBritishCycli
Horsebackriding______boththeskillofhandlingahorseandthemasteryofdiverseridingstyles.
Hewantstostarthisownbusiness,but______handlingpayroll,governmentcompliance,andbenefitschores.
随机试题
Mostyoungpeopleenjoysomeformsofphysicalactivity.Itmaybewalking,cycling,swimming,orinwinter,skatingorskiing.
女,48岁,严重烧伤,于上午8时开始输液共3600ml,每分钟滴注90滴。请估计何时完成输液()。
门诊发现传染病患者时,应立即采取的措施是
甲状腺功能减退的病人可见面容为( )
下列建筑钢材性能指标中,不属于工艺性能的有()。
孩子尿裤子回家,家长来园中质疑,您会怎么处理?
人民检察院受理同级公安机关移送审查起诉的案件,认为按照管辖规定应当由其他同级人民检察院起诉的,受理案件的该人民检察院应当()。
在过去60年中,现代中国的建设走过一条_______的道路,经历过无数艰辛、动荡、摇摆与反复,既有山重水复之_______,也有柳暗花明之转机。依次填入画横线部分最恰当的一项是()。
(2013年真题)2012年6月,我国完成了铁路运输法院移交地方的改革工作。对此,下列说法正确的有
—Lookatthenotebelow.—Youwillhearatalkbetweentwomen.Tuesday5NovemberTasks1.AskDr.Rae
最新回复
(
0
)