Book8_Unit_2_Cloning-Reading 上课用复习过程.ppt

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1、Book8_Unit_2_Cloning-Reading上课用11.对…有重大影响12.支持13.一定做14.引起反对15.一阵16.开阔视野17.继续做18.实现野心19.不同意…20.观点11.haveagreatimpacton12.infavourof13.beboundto14.raiseobjections15.astormof16.openone’seyesto…17.continuetodo18.attainone’sambitions19.disagreewith20.pointofviewImportantsente

2、nces:1.Cloningplantsisstraightforwardwhilecloninganimalsisverycomplicated.2.Butatlastthedeterminationandpatienceofscientistspaidoffin1996withabreakthrough.3.CloningscientistswerecastdowntofindthatDolly’illnessesweremoreappropriatetoamucholderanimal.4.Ontheotherhand,Dolly

3、’sappearanceraisedastormofobjectionsandhadagreatimpactonthemediaandpublicimagination.5.Itsuddenlyopenedeverybody’seyestothepossibilityofusingcloningtocureseriousillnessesandeventoproducehumanbeings.6.Althoughatpresenthumaneggcellsandembryosneededforcloningresearcharediff

4、iculttoobtain.7.However,scientistsstillwonderwhethercloningwillhelpusorharmusandwhereitisleadingus.Unit2cloningWhichonesarenaturalclones?Whichonesareman-made?Howdotheydiffer.WarmingupAstrawberryplantNaturalcloneGrowingnewplantsNaturalcloneisonethatoccursinanaturalformofc

5、loningwithouthumanhelp.Man-madecloneisonethatisproducedthroughhumanintervention(介入).DollythesheepShewasclonedwhiletheotherswerebornnaturally.Inotherword,Dollywasa______sheep.clonedHowdoesDollydifferfromothersheep?Pre-reading–addyourquestionstothelistQuestionlistaboutclo

6、ningWhatisaclone?Howisacloneproduced?Whatbenefitscanhumansgainfromcloning?Whatproblemsmayarisewhenhumansarecloned?5.…6.…CLONING:WHEREISITLEADINGUS?Predict:Whatquestionsaboutclonemightbefoundinthispassage?【课内探究】I.Readthepassageandnumberthemainideaofeachparagraph._____Clon

7、inghastwomajorusesandsuccessfulclone._____Cloningisawayofmakinganexactcopyofanotheranimalandplant(definition)_____TheeffectofDolly._____Itisforbiddentoclonehumanbeings._____TheproblemsofDolly.21453DefinitionItisawayof__________________ofanotheranimalandplant.2majorusesof

8、cloning1)Toproduce___________quantitiesofplants.2)Itisvaluableforresearchonnew______________andmedicalr