东南大学《英语三级》scriptkey-watch,listenandreadunit4

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1、Unit4WatchingvideoSCRIPTNarrator:Welcometo"SharkAlley”，oneofthefewplaceswheregreatwhitesharksroam.TouristsoftenvisitthecoastofSouthAfricatoseethesesharksintheirnaturalenvironment.Diver:“Whoa!”Narrator:Butthesedays,thegreatwhitesarepartofalargecontroversy.Peoplearewonderingifcagedivingis

2、turningtheworld'slargestpredatoryfishintoahunterofhumans-TarynWarner,Surfer:"TherUsjuststartedtobemoreandmoreattacks,morefriendsofours,peoplethatweactuallyknew：Narrator:Isbaitingthesharksconditioningthesecreaturestothinkofhumansasfood?Twomenwanttofindout:biologistBradyBarr,andsharkresea

3、rcherRyanJohnson・Aspartofhisresearchintothesehugeanimals,BarrplanstoswimwiththegreatwhitesofSharkAlley.SharkAlleyislocatednearthetownofGansbaaionthetipofSouthAfrica'sCapeofGoodHope・DyerIslandislocatedjustoffthecoastofGansbaai,andjustoffDyerIslandisaplacecalled"GeyserRock：whichishometoth

4、ousandsofcapefurseals.Greatwhitesoftenswimupanddownthechannelhuntingtheseals,whichhasearnedthisareathename“SharkAlley：Anentiretouristindustryhasdevelopedherewhichisbasedonpeoplewhocometodivewithsharks.Diveoperatorsoftenthrowfishpartsandbloodintothewatertoobtainmoresharkactivityfortheirc

5、ustomers.Butwhathappensifyouusebaittoattractsharkstohumans?Dothesharkslearntothinkofpeopleasfood?Narrator:RyanJohnson,asharkresearcherfromNewZealandisinGansbaaitofindout.RyanJohnson,SharkResearcher:“Myresearchreallyentailslookingatthepredatorybehaviorofthewhiteshark：Narrator:BiologistBr

6、adyBarrisgoingtoaccompanyRyanonavisittoSharkAlley.Theyhopetorevealmoreaboutsharkbehaviorandthepossibledangersofcagedivingforswimmersandsurfers.It'searlymorningwhenRyanandBradygettoSharkAlley.Theywanttobetherebeforeanyoneelse.Johnson:'Thesearedesignedtosortofresemblethenaturalprey;thelar

7、gerpreyoftheshark."Narrator:Ryanplanstomonitorthesharks'behaviorbeforethecage-diveoperatorsarrive.He'llthenobservewhetherornotthearrivalofthediveboatsaffectshowaggressivethesharksare.Oncethedecoysareset,alltheyneedtodoiswait;buttheyhavenoideawhen——orif—asharkwillcome.D匚BradyBar