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 seve
In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association(NBA)listed at over seve
admin
2017-06-29
41
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. "
Wilt Chamberlain is cited as an example to______.
选项
A、illustrate the change of height of NBA players
B、show the popularity of NBA players in the U. S.
C、compare different generations of NBA players
D、assess the achievements of famous NBA players
答案
A
解析
细节题。通过Wilt Chamberlain定位到第一段,先定位,“In the early 1960s WiltChamberlain was one of only three players in the National B asketball Association(NBA)listed at over seven feet.If he had played last season,however,he would have been one of42.”19世纪60年代初,Wilt Chamberlain是NBA身高超过7尺的3人之一,如果他打了最后一个赛季的话,他将是42人之一。说明后来NBA中身高超过7尺的增加到了42人。也就证明了NBA运动员的身高变化。
转载请注明原文地址:https://kaotiyun.com/show/g0FO777K
0
考博英语
相关试题推荐
Thisisanalarmingrealizationasnaturalresourcesandtheenvironmentarebeingdegradedand____atarecordpace.
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsectsordisease.Butunlikehumans,plantscanhavethei
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescientistshadgoodnewstoreport;Thedamageanddeath
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescientistshadgoodnewstoreport;Thedamageanddeath
GrandTetonNationalPark____themostscenicportionoftheglaciated,snow-coveredTetonRange.
Atthefall2001SocialScienceHistoryAssociationconventioninChicago,theCrimeandJusticenetworksponsoredaforumonth
Atthefall2001SocialScienceHistoryAssociationconventioninChicago,theCrimeandJusticenetworksponsoredaforumonth
Theactivitiesoftheinternationalmarketingresearcherarefrequentlymuchbroaderthan____.
Everyoneitseemshasahealthproblem.AfterpouringbillionsintotheNationalHealthService,Britishpeoplemoanaboutdirty
随机试题
在以效率衡量政策时,效率标准的重点在于_______。
多媒体技术的特点不包括_____。
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeopleareeitherhappierorunhappierormoreorlesscert
急性感染性心内膜炎的特点是
患者,女性,71岁,晨练时突然摔倒,意识丧失,大动脉搏动消失。护士应首先采取的措施是
在土地利用总体规划确定的城市建设用地范围外,单独选址的建设项目使用土地的,建设单位应当向土地所在地的()提出用地申请。
材料的耐久性是一项综合性质,一般包括()。
在用Word编辑时,文字下面的红色波浪下划线表示()。
教育学研究的对象是【】
图例:粉年无逻
最新回复
(
0
)