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
2017-12-11
25
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."
On which of the following statements would the author most probably agree?
选项
A、Non-Americans add to the average height of the nation.
B、Human height is conditioned by the upright posture.
C、Americans are the tallest on average in the world.
D、Larger babies tend to become taller in adulthood.
答案
B
解析
细节题。根据出题顺序定位到第四段。段中提到real constraints that are set by the genetic architecture(对身高的限制是由遗传结构决定的),可见直立行走的姿势是限制身高的遗传因素 之一,选B项。其他三项均是对原文的曲解。
转载请注明原文地址:https://jikaoti.com/ti/XTX7FFFM
0
考研英语一
相关试题推荐
Asimpleideasupportsscience:"trust,butverify".Resultsshouldalwaysbe【C1】______tochallengefromexperiment.Thatsimple
We’vebeenhearingaboutitforyears,butthebooklesslibraryhasfinallyarrived,firstappearingoncollegecampuses.AtDre
We’vebeenhearingaboutitforyears,butthebooklesslibraryhasfinallyarrived,firstappearingoncollegecampuses.AtDre
Collegestudentsaremorestressedoutthaneverbefore—atleastaccordingtothelatestfindingsofalarge,nationalsurveyth
Arepasswordsoutdated?It’sstartingtoseemlikeit.Everybodyhatesthem,andnobodycanrememberalltheonesthey’ve【C1】___
Arepasswordsoutdated?It’sstartingtoseemlikeit.Everybodyhatesthem,andnobodycanrememberalltheonesthey’ve【C1】___
ConventionalwisdomholdsthatMillennialsareentitled,easilydistracted,impatient,self-absorbed,lazy,andunlikelytostay
Niceguysknewit,nowtwostudieshaveconfirmedit:badboysgetthemostgirls.Thefindingmayhelpexplainwhyanastysuit
Whenoneofhisemployeesphonedinsicklastyear,ScottMcDonald,CEOofMonumentSecurityinSacramento,California.,decided
"Projectgold"and"ProjectNexus"soundlikeplansforbankrobberiesormilitaryattacks.Inreality,theyarethenamesforK
随机试题
中国甲公司与日本乙公司拟共同设立一中外合资经营企业。在拟订的下列合同条款中,哪一条是违法的?
在套用完变压器概算定额后,()工作内容还需套用其他定额。
下列交易或事项所产生的现金流量中,属于“投资活动产生的现金流量”的有()。
人们欣赏名画《蒙娜丽莎》时,陶醉在“永恒的微笑”中,感到身心非常愉悦。这种情感是()。(2014.贵州)
当国际奥委会主席宣布2008年奥运会在中国北京举行时,此时全场都非常兴奋,大家都鼓掌以示高兴,这种情绪属于()。
Itisdifficulttocomprehend,buteverythingyouhaveeverseen,smelt,heardorfeltismerelyyourbrain’sinterpretationof
下列选项中,属于心理学研究对象的是
(2015年单选1)原铁道部部长刘某因受贿罪、滥用职权罪被追究刑事责任。有人认为,在对刘某量刑时“应考虑他对中国高铁建设的贡献”。这种说法违背了我国刑法中的()。
Yesterdaymyauntboughtsomenew______forherflatattheseaside.
TheAmericandefinitionofsuccessislargelyoneofacquiringwealthandahighermaterialstandardofliving.Itisnotsurpri
最新回复
(
0
)