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1、英猪四怨快速闻筱专顼体习（金备案解斩丿（一）SkimmingandScanningDirections:Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.Forquestions1-7,choosethebestanswerfromthefourchoicesmarked[A],[B],[C]and[D].Forquestion8-10,completethesentenc
2、eswiththeinformationgiveninthepassage・AnimalsontheMoveItlookedlikeaseenefrom“Jaws”butwithoutthedramaticmusic.Ahugesharkwasslowlyswimmingthroughthewater,itstailswingingbackandforthlikethependulumofaclock・Suddenlysensitivenerveendingintheshark，sskinpickedup
3、vibrationsofastrugglingfish.Thesharkwasimmediatelytransformedintoadeadly,efficientmachineofdeath・Withmusclestaut,thesharkknifedthroughthewateratarapidspeed・Inaflashthesharkcaughtitsvictim,alargefish,initspowerfuljaws・Then,jerkingitsheadbackandforth,thesha
4、rktorehugechunksoffleshfromitsvictimandswallowedthem・Soontheactionwasover.MovingtoSurviveInpursuingitsprey,thesharkdemonstratedinadramaticwaytheimportsntroleofmovement,orlocomotion,inanimals・Liketheshark,mostanimalsusemovementtofindfood.Theyalsouselocomot
5、iontoescapeenemies,findamate,andexplorenewterritories.Themethodsoflocomotionineludecrawling,hopping,slithering,flying,swimming,orwalking・Humanshavetheaddedadvantageofusingtheirvariousinventionstomoveaboutinjustaboutanykindofenvironment.Automobiles,rockets
6、,andsubmarinestransporthumansfromdeepoceanstoasfarawayasthemoon.However;forotheranimalsmovementcameaboutnaturallythroughmillionsofyearsofevolution.Oneofthemostsuccessfulexamplesofanimallocomotionisthatoftheshark.Itsabilitytoquicklyzeroinonitspreyhasalways
7、impressedscientists.ButittookadetailedstudybyDukeUniversitymarinebiologistsS.A・Wainwright,F.Vosburgh,andJ.H.Hebranktofindouthowthesharksdidit.IntheirstudythescientistsobservedsharksswimminginatankatMarinelandinSaintAugustine,Fla.Moviesweretakenofthesharks
8、'movementsandanalyzed.Studieswerealsomadeofsharkskinandmuscle.SkinIstheKeyThebiologistsdiscoveredthattheskinofthesharkisthekeytotheanimaTshighefficiencyinswimmingthroughthewater.Theskincontainsmanyfibersthatcrisscro
