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1、考輔領(lǐng) IreadingTextIn the early 1960s, Wilt Chamberlain was one of the only three players in the National tion (NBA) listed at over seven feet. If he layed last season, however, he would have one of 42. The bodies playing major al sports have changed dramatically over the years, managers have been long

2、ern willing 考輔領(lǐng) IreadingTextIn the early 1960s, Wilt Chamberlain was one of the only three players in the National tion (NBA) listed at over seven feet. If he layed last season, however, he would have one of 42. The bodies playing major al sports have changed dramatically over the years, managers ha

3、ve been longern willing to adjust team uniforms to fit the growing numbers of The trend in sports, though, may be obscuring an unrecognized reality: Americans have stopped growing. Though typically about two inches taller n 140 years ago, lly those born to s who have he U.S. for many generations-rea

4、ched their he early1960s, And they arent likely to get any taller. eral today, at this genetic, environmental level, weve pretty much gone as we can go,” says William Cameron Chumlea of Wright e University. In the case of NBA players, their increase height appearsto resultfromthe increasingly common

5、 practice ofrecruitingpayersfrom alloverGrowth, which rarely the age of 20, demands calories and nutrients-protein-to feed expanding es. At the start of the 20th century, under-nutrition and infections he way. But as diet and health improved, children and adolescents have, increased in height by abo

6、ut an inch and a half every 20 years, a pattern known as the secular trend height . Yet according the Centers for Disease Control and Prevention, average heights 59for man. forwomen-hasntreallychangedsinceGenetically speaking, there are advantages to avoiding substantial height. During childbirth, b

7、abies have more difficulty passing through the birth . Moreover, even though humans have upright for millions of years, our feet andback continue tostruggleture and cannott are set by withstand repeated strain ed by oversize limbs. “There are some real genetic architecture of the anism,” says anthro

8、pologist William Leonard of ums can change, but dont expect this to happen soon. Claire C, Gorbon, the Army Research Center in Natick Mass., t 90 percent of the uniforms ions fit recruits without alternation. She t, unlike those for basketball, the length military uniforms has not changed for some t

9、ime. And if you need to predict human he future to design a piece of equipment Gordon t byions fit recruits without alternation. She t, unlike those for basketball, the length military uniforms has not changed for some time. And if you need to predict human he future to design a piece of equipment G

10、ordon t by and large, “you could use todays data and fairly21.WiltChamberlainiscitedasanleillustratethechange ofheightofNBA heshow the popularityofNBA comparedifferent generationsof NBAD.assesstheachievementsmousNBA22.WhichofthefollowingplaysakeyroleinbodyccordingtotheA.GeneticB. NaturalC.Living 23.

11、OnwhichofthefollowingD. DailyementswouldtheauthormostprobablyA. Non-Americansadd totheaverage heightoftheB.Human heightis conditionedbythe C. Americansarethetallest heD.Larger babiestend e tallerin24.Welearn fromthelast thenearthegarmentindustry willreconsider theuniform thedesign ofmilitaryuniforms

12、 willremaingenerictesting willbeemployedin selecting the existingdata ofhumanheight will stillbe25.TheendslA.thechange of humanheightfollowsa cyclicB.humanheight ingevenmoreC. AmericanshavereachedtheirgeneticgrowthD. eticpatternofAmericans has122IIDirections: You have a friend who is about toIIDirections: You have a friend who is about to enter university, and he wants you to advise him on subjects to lizehistory, in which he is erested, or computer science, which offers job prosp