人教版高二英语选修八第二单元学案含答案.doc

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1、Unit2Cloning（Module8）Period1Reading:Cloning:WhereisitleadingusClass：Name：__________Group：No：______LearningObjectives:1.Learntheusefulnewwordsandexpressions.2.Readthepassageandlearnsomeinformationaboutcloning.LearningKeyPoints:1.Grasptheimportantwordsandexpres

2、sionsinthereadingmaterial.2.LearnthetextandmasterthemajorusesofcloningandthesuccessandproblemofcloningDollythesheep.LearningDifficultPoints:1.Improvethereadingability.2.Learnthereadingskills:scanningandskimming.Assessment:LearningProcedures:I.【Pre-classhomewo

3、rk】A.WarmingupTherearetwokindsofclones,anaturalcloneandaman-madeclone.Doyouknowwhatisanaturalclone?Andwhatisaman-madeclone?Anaturalcloneisonethat______________________________________________________Man-madecloneisonethat______________________________________

4、______________B.Pre-readingBackgroundreading:ScottishscientistsatRoslynInstitutecreatedthemuch-celebratedsheep"Dolly",arousedworldwideinterestandconcernbecauseofitsscientificandethicalimplications.ShewasthefirstmammaltobeclonedfromadultDNAtakenfromanadultcell

5、.Previously,animalshadonlybeenclonedusingembryo(胚胎)cellswhichalreadyhavethepotentialtobecomeacompleteembryoinitsownright.ThebigbreakthroughwithDollywastomakeaclonefromanordinary,adultcell−inthiscasefromafemalegoat’sudder.Questions:1.HowdoesDollydifferfromothe

6、rsheep?Shewas______________byhumanswhiletheotherswerebornnaturally.So,Dollywasa______________sheep.2.Shouldwecloneahuman?Assessment:II.【While-class】Step1.Lead-inStep2.GroupdiscussionStep3．Consolidation1.Reading1.Fillintheform.ParaMainideaofeachparagraphDetail

7、sSummary1The__________ofcloningCloningiswayof(1)_________________________________ofanotheranimalsorplant.Thepassagemainlytellsus___________________________________________________________________________________________________________________________________

8、_____________________________________________________________________________________________________________2The____________usesFirstly,toproduce(2)________________quantitiesofplants.Sec