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 1960, Ethiopian marathoner Abebe Bikila earned an Olympic gold medal without wearing any shoes. But bare feet on the Olympic
In 1960, Ethiopian marathoner Abebe Bikila earned an Olympic gold medal without wearing any shoes. But bare feet on the Olympic
admin
2015-03-25
24
问题
In 1960, Ethiopian marathoner Abebe Bikila earned an Olympic gold medal without wearing any shoes. But bare feet on the Olympic track these days are passe, as athletes slip into ever more high-tech gear. Shoes, swimsuits, and clothing are getting lighter and stronger, adhering like glue to athletes’ bodies and moving more fluidly through air and water.
In Beijing, U. S. track and field athletes will be wearing Nike shoes and clothing that incorporate threads made of Vectran, a superstrong liquid crystal polymer that withstands high temperatures. The result, according to Nike, is lighter, stiffer shoes to reduce friction and clothes that reduce drag by 7% compared with the Nike outfits worn at the 2004 games in Athens.
Sprinters will also benefit from even tighter compression garments. In theory, these improve performance because of proprioception, that unconscious ability that enables you to pinpoint your nose when your eyes are closed. Physiologist Russ Tucker of the University of Cape Town, South Africa, says that because runners need to contract muscles precisely—at the proper angle, velocity, and time—tight-fitting garments help the brain identify where in space the limb is poised so they know when to activate the muscle.
In the water, the Speedo LZR Racer suit, which debuted in March 2008, is all the buzz. Swimmers donning the suit have broken 46 world records so far. The suit includes polyurethane panels placed strategically around parts of the torso, abdomen, and lower back that experience high amounts of drag in the pool. It also incorporates a corset-like structure that keeps the body in a streamlined position. Raul Arellano, a biomechanist at the University of Granada, Spain, says the LZR Racer suit could benefit older athletes like 41-year-old Dara Torres of the United States, especially in areas where fat tends to accumulate.
Some of the technologies needed to develop the suit " didn’t really exist 10 years ago," says Jason Rance, head of Aqualab in Nottingham, U. K. , the division of Speedo that designed the suit. Those include ultrasonic welding that eliminated the need for seams, and technology that allowed parts of the suit to be finely sanded and a waterrepellent substance added to prevent water from leaking in.
But the suit has raised eyebrows. "Who’s going to win the gold medal, the swimmer or the technician?" asks Huub Toussaint, a biomechanist at the Free University in Amsterdam, who worries that the suit gives swimmers an unfair edge, although the international body governing the sport approved it.
For all the hype surrounding space-age shoes and clothing, there’s a flip side: Any boost to performance could just be psychological. South Africa’s Tucker, who races for fun, says the compression garments make him feel powerful and secure. Such a superhero aura might give any competitor a mental edge. " It doesn’t really matter if the advantages are physically real or not," he says, "as long as the athlete gets some benefit. "
Abebe Bikila is mentioned in Paragraph 1 to
选项
A、show how poor the people then were.
B、tell us that he was from an undeveloped country.
C、introduce the topic of the passage.
D、remind us of the past time.
答案
C
解析
推理判断题。根据题干关键词Abebe Bikila可以定位至第一段,作者先说1960年的马拉松运动员赤脚参加比赛,随后做了一个转折,引出话题,即现在的运动员都穿高科技的运动衣了,[C]与此一致,故为答案。原文并非要表明当时的贫穷状态或埃塞俄比亚的落后,故排除[A]、[B];这里也没有追忆过去的目的,故排除[D]。
转载请注明原文地址:https://kaotiyun.com/show/6174777K
0
考研英语一
相关试题推荐
IfmenarefromMarsandwomenarefromVenus,itmayexplainatleastoneoftheirsharedbeliefs:Menandwomencan’tbereal
Itisonlyinrecentyearsthatwehaverecognizedthat_____.TheauthorbelievesthatsexdiscriminationintheWestbeforet
BillGates,thebillionaireMicrosoftchairmanwithoutasingleearneduniversitydegree,isbyhissuccessraisingnewdoubtsa
ThepopulationoftheUnitedStatesisonly6%theworld’spopulation,butAmericans(1)_____onethirdofalltheenergy(2)___
ThepopulationoftheUnitedStatesisonly6%theworld’spopulation,butAmericans(1)_____onethirdofalltheenergy(2)___
Untilrecently,mostpopulationgrowthhasoccurredinrelativelydenseurbanenvironments.In【C1】______words,evenifwewerew
Untilrecently,mostpopulationgrowthhasoccurredinrelativelydenseurbanenvironments.In【C1】______words,evenifwewerew
Untilrecently,mostpopulationgrowthhasoccurredinrelativelydenseurbanenvironments.In【C1】______words,evenifwewerew
Whatistheessenceofthistext?Theselectionimpliesthat,moreoften,thevalueofaneducationaltestrestswith
InAmericaandEuropemagazinepublishershaveacommonheadache:totalcirculationiseitherflatordecliningslightlyaspeop
随机试题
0.45mm孔径的粉末筛用于条形、圆形茶,0.63mm孔径的粉末筛用于碎茶和粗形茶。
一中学生两年前开始双下肢大片出血点,对称性分布。其间时有发作,但血小板计数、出血时间、活化部分凝血活酶时间测定始终在正常范围。病人出血更为可能的原因是
某女性病人,妊娠2个月,患肺血栓栓塞症,应禁用哪种药物
前列腺增生与前列腺癌的鉴别应采用前列腺增生与神经性膀胱的鉴别应采用
写出项目建设与国家产业政策的符合性分析。该项目大气污染物排放执行哪个标准?
小暑是指进入一年中的酷暑季节,并已到达最热的时期。()
美国最早的中等学校是1635年在波士顿设立的()。
全面依法治国必须坚持人民在全面依法治国中的主体地位。坚持人民在全面依法治国中的主体地位,为此需要坚持法治()
Whenherealizedthepolicehadspottedhim,theman____theexitasquicklyaspossible.
Amongthepleasuresintheworld,thejoyfromreadingcanbeone.Happyisthemanwhoacquiresthe【C1】______ofreadingwhen
最新回复
(
0
)