安徽工程大学英语4重修练习6和7

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1、练习6PartI.ReadingcomprehensionSection1:Inthissection,thereisapassagewith10blanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesinawordbankproceedingthepassage.Youmaynotuseanyofthewordsinthebankmorethanonce.A.alsoB.measuringC.onesD.rapidlyE.starveF.weighedG.determinedH.slowlyI.

2、atJ.maintainK.formedL.weighsM.withN.animalO.asfastasEveryanimalisalivingradiator---heat1initscellsisgivenoffthroughitsskin.Warm-bloodedanimals2asteadytemperatureconstantlybyreplacinglostsurfaceheat;smalleranimals,whichhavemoreskinforeveryounceofbodyweight,mustproduceheatfasterthanbigger3.

3、Becausesmalleranimalsburnfuelfaster,scientistssaytheylivefaster.Thespeed4whichananimallivesisdeterminedby5therateatwhichitusesoxygen.Achicken,forexample,usesone-halfcubiccentimeterofoxygeneveryhourforeachgramitweighs.Thetinyshrewusesfourcubiccentimetersofoxygeneveryhourforeachgramit6.Beca

4、useitusesoxygeneighttimesasfast,itissaidthatthemouselikeshrewislivingeighttimes7thechicken.Thesmallestofthewarm-bloodedcreatures,thehummingbird,livesahundredtimesasfastasanelephant.Thereis8alimithowsmallawarm-bloodedanimalcanbe.Amammalorbirdthatweighedonlytwoandahalfgramswould9todeath.Itw

5、ouldburnupitsfoodtoo10andwouldnotbeabletoeatfastenoughtosupplymorefuel.Section2Directions:Therearetwopassagesinthispart.Eachpassageisfollowedby5questions,withfourchoicesgivenforeachquestion.Pleasedecideonthebestchoice.Passage1Inthesummerof1978anEnglishfarmernamedIanStevenswasdrivinghistra

6、ctorthroughafieldofwheatwhenhediscoveredsomethingstrange.Someofhiswheatwaslyingflatontheground.Theflattened（被压平的）wheatformedacircleaboutsixmetersacross.Aroundthiscirclewerefoursmallercirclesofflattenedwheat.Inthefollowingyearsmoreandmoresimilarcircleswerefoundinafieldofwheatorcorn.Sopeopl

7、ecannothelpbutaskthequestion:Whatcausesthecircles?Atfirst,peoplesuspectedthatthecircleswereatrick.Toprovethatthecircleswereatrick,peopletriedtocopythem:theytriedtomakecirclesexactlyliketheonesthefarmershadfound.Theycouldn’tdoit.Theycouldn'tenterafieldofgrainwithoutl