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
38
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
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsectsordisease.Butunlikehumans,plantscanhavethei
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescientistshadgoodnewstoreport;Thedamageanddeath
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescientistshadgoodnewstoreport;Thedamageanddeath
GrandTetonNationalPark____themostscenicportionoftheglaciated,snow-coveredTetonRange.
Everyoneitseemshasahealthproblem.AfterpouringbillionsintotheNationalHealthService,Britishpeoplemoanaboutdirty
PassengerjetsofJapan’saircarrierAllNipponAirwaysareseenparkedonthetarmacatTokyoInternationalAirportin2008.T
随机试题
Maureenstoodbythelake.Suddenlythechildrencamerunningthroughthetreeswithsharpcriesof【C1】______.Theyrushedupto
诊断良恶性骨肿瘤最主要的依据是
某铁路工程项目根据工程量的分布情况,并考虑到铺轨前路基及桥隧工程施工期限短的特点,分为两个工区(区段),里程划分为DK0+000~DK75+293,DK75+293~DKl05+000。其中第一工区划分为3个施工单元:DKl4+800处一座特大桥;路基土石
公安部《关于实施有关问题的通知》(公通字[2001]97号)进一步提出了消防安全重点单位的界定标准。针对商场(市场)、宾馆(饭店)、体育场(馆)、会堂、公共娱乐场所等公众聚集场所,下列不属于消防安全重点单位界定标准的是()。
下列说法错误的是()。
在判断所得是来源于中国境内还是境外时,下列说法正确的有()。
据国外媒体_______,植物长期以来一直被认为只会保持_______。但事实证明,它们一直在“说话”。填入画横线部分最恰当的一项是:
列宁对辩证唯物主义物质范畴的定义是通过()。
[*]
Whatdoesthewomanwanttodo?
最新回复
(
0
)