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1、2019-2020年高中英语必修5Unit3TeachingDesignAimsandrequirements♦readanewspaperarticleaboutcloningandanarticleaboutpeopleandthenaturalworld♦listentoadiscussionaboutgrowthhormones♦discussyourideasaboutcloningandconductaninterviewaboutGMfood♦writeaformalletteraboutGMfood♦t
2、akepartinadebateProceduresWeletotheUnitStep1:BrainstormingAtthebeginningoftheclass,let’sfirstlookatsomepictures.Perhapsyouarefamiliarwiththem.Especiallyfromthesecondone,youmaythinkoftheworldfamousclonedsheep---Dolly.DoyouknowaboutcloningandDolly?Whatdoyouknowabo
3、utthem?“Cloning”isanewtechnologywhichproducesanexactcopyofananimaloraplantfromitsowncells.DollywasthefirstclonedmammalcreatedbyaScottishscientistandhisgroupin1996.Shewasexactlythesameashermother,inappearanceandingenes.Whatdoyouthinkofthenewkindoftechnology?Doesi
4、thaveadvantagesordisadvantages?Thenewkindoftechnologyhascausedwidespreaddiscussion.Itcanhelpcuremanydiseases,savelotsofpeople’slivesandevenpreventsomeendangeredanimalsfromdyingout.However,ontheotherhand,ifitisusedtoclonehumanbeings,thatisagainstthelawsofnature.S
5、tep2:SharinginformationLookatthefollowingpicturesandstudythem.Canyoutellwhatthemainfeatureofcloningis?Theclonedanimalsorplantsareexactlythesameastheoriginalones.Picture1WehavementionedDolly----thefirstclonedmammal.Inthispicture,Dollyistogetherwithhermother.Canyo
6、utellmemoreabouther?Asweallknow,Dolly’sbirthsparkledworldwideinterestandconcern.Manycountries,includingGermany,France,Canada,Switzerland,Austria,NorwayandSouthAfrica,havebannedhumancloning.It’sapitythatinxxitdiedbecauseoflungdisease.Picture2Themuleinthepictureis
7、theworld’sfirstclonedmule.Itwasbornon4Mayxx.HisnameisIdahoGemandhisbrother,Taz,wasaracingmulethathaswonmanypetitions.ItseemsasifhewantedtoPKhisbrotherPicture3ThekitteninthepictureiscalledCc.Itsnameisfrom“Copycat”.ScientistsintheUSAcreateditwithacelltakenfromitsm
8、other,Rainbow.ItwasborninDecemberxxPicture4Thesefemalepigsarealsocloned.TheyarebornonChristmasDayxx.TheyareNoel,Angel,Star,JoyandMary.Picture5Thepairofcalveswasbornon
