人教版高中英语选修八公开课课件CLONING.pptx

1、madeofcanruohanxingCloningisawayofmakinganexactcopyofanotheranimalandplant.Whatiscloning?Whoisfamousinthecloningfield?DoyouknowsomethingaboutDolly?Whenwassheborn?Issheman-madeornaturalcloning?Whendidshedie?Howlongdidshelive?Whyisshesofamous?DiscussionHowdoscientistscloneasheep?Afemalesheepprovidesan

2、eggcell.Thenucleusisremovedfromtheeggcell.Step1Asecondfemalesheepprovidesasomaticcell.Thenucleusisalsotakenout.Step2TheeggcellfromsheepAandthenucleusfromsheepBarejoinedtogetherusingelectricity.Step3Thecombinedcelldividesandgrowsintoanembryo.Step4TheembryoisthenputintofemalesheepC.FinallyasheepDisclo

3、ned.Step5sheep,goats,oxen,mice,pigs,cats,rabbitsandsoon.Whatanimalshavebeencloned?Canyoupredictthefutureofcloning?Whatwillisitleadingus?UUn ni it t2 2C Cl lo on ni in ng g:WWh he er re eI Is sI It tL Le ea ad di in ng gUUs s?ReadingStrategies1.Thebetterwaytogetthemainideais:A:Readthepassagesentenceb

4、ysentenceandstudythemeaningofindividualwordsorsentenceifnecessary.B:Trytolocateatopicsentenceinthefirst,thelastorsometimesinthemiddleparagraph.scanskimWhatisthetopicsentenceofthefirstparagraphWhatisthetopicsentenceofthelastparagraph?However,scientistsstillwonderwhethercloningwillhelporharmusandwhere

5、isitleadingus.Cloninghasalwaysbeenwithusandisheretostay.“beheretostay”isanidiom,whichmeans“beacceptedandusedbymostpeople”1.Themainideaofthetextis_.A.animalcloningisveryvaluableandcanbenefittheworldB.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbiddenC.animalcloningiswelldevelopedbecauseDollyth

6、esheepwasbornD.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture2.WhichofthefollowingstatementsaboutcloningisNOTtrueaccordingtotext?A.Cloningissomethingthathasbeendevelopedquiterecently.B.Twinsthatlookexactlythesameareoriginallyfromthesameegg.C.Cloningisusedbygardenerstomakemoremoney

7、.D.Animalcloningismuchmoredifficultthanplantcloning.3.ThecloningofDollythesheepsucceededbecause_.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed4.Whichofthefollowingisnot

8、anadvantageofcloning?A.Cloningcanbeusedformedicalpurposes.B.Largequantitiesoffoodcanbeproducedbycloning.C.Cloningcanhelpkeepanimalsfrombecomingextinct.D.Famouspersonswhohavepassedawaycanbecloned.5.Thesheepthatdonatedthesomaticcellmostprobablylived_years.A.3B.6C.9D.12推推理理判判断断Whenwecomeacrossquestions

9、thatrequireustoinfer,implyorconcludefromthepassage,rememberto:_A.inferunknownfactsfromknownfactsB.usethedirectinformationfromthetext1.Cloningnotonlyhappensin_,butalsoin_.2.Cloninghastwo_.First,itcanhelpgardenersproduce_.Second,itisvaluableforresearchon_andformedicalresearchon_.Cloningplantsis_whilec

10、loninganimalsisvery_.plantsanimalsmajorusescommercialquantitiesofplantsnewplantspeciesanimalsstraightforwardcomplicated3.Thewholescientificworld_ofDolly.Atfirst,thefactthatDollyseemeddevelop_wasvery_.Later,cloningscientistswere_tofindthatDollys_weremore_toamucholderanimal.4.Cloningbecame_.Usingcloni

11、ngto_.followedtheprogressnormallyencouragingcastdownillnessesappropriatecontroversialCureseriousillnessesABA:Ithinkcloningisgoodforus.BecauseB:Ithinkcloningisbadforus.BecauseIscloninggoodorbadforus?WritedownyourideaDescribethepictureinyourownwordsWhatisyouropinionofcloninghuman?PairWorkWatchthemovieanddiscussWriteapassagetitledIscloninggoodorbad?Yourpassageshouldincludethefollowing：1)Whatiscloning2)Advantagesofcloning3)Disadvantagesofcloning4)YouropinionofitHHo omme ewwo or rk k