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1、y,too.Theyareactive,butnotasactiveasthethinnermice.Buttheyonlyliveabouttwoyears,notthethreeyearsormoreofthethinnermice.Thelastgroupofmiceisreceivingmorefoodthantheothertwogroups.Mostoftheday,thesemiceareeatingorsleeping.They’renotveryactive.Thesemicearelivinglongerthanthescienti
2、ststhought—aboutayearandahalf.Buttheyarenothealthy.They’resickmoreoftenthantheothertwogroups.Theexperimentisstillgoingon.Thescientistshopetofinishtheirstudiesintwoyears.Task2【答案】A.1)Peoplekeepfishinacertainplacejustastheykeepsheepandcattle.2)Byeducation.3)Wastepollutesthesea,and
3、planktondies.Otherseaanimalsthatliveonplanktoncannotfindenoughfood.4)Theyneededtokillwhalesfortheirmeat,theirbonesandtheoilfromtheirfat.Buttheyhaveothermaterialsnow.B.ScientistsIdeasAdamsBrownChurchStartmorefishfarmsonland√√StopfishingincertainpartsoftheOcean√√Onlyalloweachcount
4、rytocatchacertainnumberoffish√√Stopkillingwhales√√√C.Peopleonland'LargefishSmallerfishZooplanktonPlantplankton【原文】Mike:Goodmorning,andwelcometoRadioTime.Forourmonthlyprogramme,ScienceToday,I'veinvitedagroupofscientiststothestudiototalkaboutsealife—ProfessorAdams,Dr.BrownandDr.Ch
5、urch.It'sgoodtohaveyouwithus.ProfessorAdams,I'vereadinthepapersthatsealifeisindanger.Isthistrue?Adams:I'mafraidso,verytrue.Astheworldpopulationgrows,weneedmorefood,sowecatchmorefish.We'reoverfishingthesea,andsoontherewon'tBEanyfish.Brown:Theansweristostartmorefishfarmsonland.Chu
6、rch:Iagree.Wemustkeepfish,likewekeepsheepandcattle.Adams:Fishfarmsareagoodidea,butIdon'tthinktheywillsolvetheproblemofoverfishingthesea.Wehavetostoppeoplefishingincertainpartsoftheocean.Church:Yes.Weneedinternationalrulestoprotectfish,andallthecountriesoftheworldmustagreetoobeyt
7、hem.Brown:Wehaverulesnow,andpeopledon'tobeythem.Iagreethatwemuststopfishingincertainpartsoftheocean...Adams:Andwemustonlyalloweachcountrytocatchacertainnumberoffish—buthowdowemakepeopleobeytheserules?Church:Idon'tknow.Byeducationperhaps?Mike:Youmean,teachpeopleaboutsealife?Churc
8、h:Exactly.Wemustexplainhoweverythingdependsonev
