考试吧昂立：2008年12月六级真题及答案(a卷)

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1、考试吧(Exam8.com)-第一个极力推崇人性化服务的专业考试培训网站！提供历年试题，模拟试题，模拟盘，教程，专业课试题下载，考试培训等。每日更新!!!声明：本资料由考试吧（Exam8.com）收集整理，转载请注明出自http://www.exam8.com服务：面向较高学历人群，提供计算机类，外语类，学历类，资格类，会计类，工程类，医学类等七大类考试的全套考试信息服务及考前培训.PartIwriting(30minutes)注意：此部分试题在答题卡1上PartIIReadingComprehension(Skimmingandscanning)(15minutes)　　Supers

2、izesurpriseAskanyonewhythereisanobesityepidemicandtheywilltellyouthatit’saldowntoeatingtoomuchandburningtoofewcalories.Thatexplanationappealstocommonsenseandhasdominatedeffortstogettotherootoftheobesityepidemicandreverseit/yetobesityresearchersareincreasinglydissatisfiedwithit.Manynowbelievethat

3、somethingelsemusthavechangedinourenvironmenttoprecipitate(促成)suchdramaticrisesinobesityoverthepast40yearsorso.Nobodyissayingthatthe“bigtwo”–reducedphysicalactivityandincreasedavailabilityoffood–arenotimportantcontributorstotheepidemic,buttheycannotexplainitall.Earlierthisyearareviewpaperby20obes

4、ityexpertssetoutthe7mostplausiblealternativeexplanationsfortheepidemic.Heretheyare.1.NotenoughsleepItiswidelybelievedthatsleepisforthebrain,notthebody.Couldashortageofshut-eyealsobehelpingtomakeusfat?Severallarge-scalestudiessuggesttheremaybealink.Peoplewhosleeplessthan7hoursanighttendtohaveahig

5、herbodymassindexthanpeoplewhosleepmore,accordingtodatagatheredbytheUSNationalHealthandNutritionExaminationSurvey.Similarly,theUSNurses’HealthStudy,whichtracked68,000womenfor16years,foundthatthosewhosleptanaverageof5hoursanightgainedmoreweightduringthestudyperiodthanwomenwhoslept6hours,whointurng

6、ainedmorethanwhosewhoslept7.It’swellknownthatobesityimpairssleep,soperhapspeoplegetfatfirstandsleeplessafterwards.Butthenurses’studysuggeststhatitcanworkintheotherdirectiontoo:sleeplossmayprecipitateweightgain.Althoughgettingfiguresisdifficult,itappearsthatwereallyaresleepingless.In1960peopleint

7、heUSsleptanaverageof8.5hourspernight.A2002pollbytheNationalSleepFoundationsuggeststhattheaveragehasfallentounder7hours,andthedeclineismirroredbytheincreaseinobesity.2.Climatecontrol考试吧论坛：http://bbs.exam8.com/考试吧博客：http://blo