(湖南专用)(新课标)2014高考英语二轮复习方案专题限时集训32说明文型阅读简答1

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1、专题限时训练(三十二)　[说明文型阅读简答(一)](限时：25分钟)(一)Australianscientistshavedefendedtheirconclusionthatclimatechangeisdecreasingthewidthofleaves.TheresearchbyDrGregGuerinandhiscolleaguesoftheUniversityofAdelaide,foundalinkbetweenincreasingtemperaturesandanarrowinginleavesofaparticularspeciesofplantth

2、atgrowsintheMediterraneanclimateofSouthAustralia.“Ifitwashotbutalsowet,theplantcouldevaporate(使蒸发)wateroutofitsleavestokeepcool,butbecauseit'ssodry,especiallyinsummer,theplantscan'taffordtodothat，”saysGuerin.“Anotherwaytokeepcoolistohavenarrowerleavesthatdon'tgetashotandcooldownquicker

3、.”ButDrRichardDuncanfromLincolnUniversityinNewZealandreanalysesthedatasuppliedbyGuerinandhiscolleaguesandcomestoadifferentconclusion.“Thereis…noevidenceofalinkbetweenchangesinmeanleafwidthandrecentclimatewarming，”writesDuncan.Guerinandhiscolleaguesoriginallymeasuredleavesfromspecimens(

4、标本)collectedbetween1882and2001.Inthestudy,theyfoundleavesgrowingclosertotheequatorwerenarrowerthanthosegrowingfurtherawayandleafwidthhaddeclinedoverthestudyperiod,coincidingwitharecentwarmingoftemperatures.Butinhisanalysis,DuncansplitGuerinandhiscolleagues'dataintotwotimeperiods—before

5、about1950whenstatetemperatureswerefairlysteady,andafterthattimewhentheywereontherise.Hesaysleafnarrowingoccurredprevioustoabout1950beforethebeginningofwarmingandremainedconstantafterthattime,aperiodduringwhichtemperaturesincreased.ButGuerinandhiscolleagueProfessorAndrewLowedefendtheiro

6、riginalfindings,sayingthattheleafdatabeforeabout1950isverysmallinnumberandthismeansit'simpossibletosplitthedataintothetwoperiodsDuncanusedandget“statisticallyreliable”results.1．AccordingtoDrGregGuerin,howdoestheplantkeepcoolinhotbutwetweather？(Nomorethan8words)_________________________

7、_______________________________________________2．WhyaretheleavesinSouthAustraliabecomingnarrower?(Nomorethan7words)________________________________________________________________________3．AfterreanalysingthedatasuppliedbyGuerinandhiscolleagues,whatdoesDrRichardDuncanconclude?(Nomore