公开课课件CLONING

Cloningisawayofmakinganexactcopyofanotheranimalandplant.Whatiscloning?Whoisfamousinthecloningfield?DoyouknowsomethingaboutDolly?Whenwassheborn?Issheman-madeornaturalcloning?Whendidshedie?Howlongdidshelive?Whyisshesofamous?DiscussionHowdoscientistscloneasheep?Afemalesheepprovidesaneggcell.Thenucleusisremovedfromtheeggcell.Step1Asecondfemalesheepprovidesasomaticcell.Thenucleusisalsotakenout.Step2TheeggcellfromsheepAandthenucleusfromsheepBarejoinedtogetherusingelectricity.Step3Thecombinedcelldividesandgrowsintoanembryo.Step4TheembryoisthenputintofemalesheepC.FinallyasheepDiscloned.Step5sheep,goats,oxen,mice,pigs,cats,rabbitsandsoon.Whatanimalshavebeencloned?Canyoupredictthefutureofcloning?Whatwillisitleadingus?Unit2Cloning:WhereIsItLeadingUs?ReadingStrategies1.Thebetterwaytogetthemainideais:A:Readthepassagesentencebysentenceandstudythemeaningofindividualwordsorsentenceifnecessary.B:Trytolocateatopicsentenceinthefirst,thelastorsometimesinthemiddleparagraph.scanskimWhatisthetopicsentenceofthefirstparagraphWhatisthetopicsentenceofthelastparagraph?However,scientistsstillwonderwhethercloningwillhelporharmusandwhereisitleadingus.Cloninghasalwaysbeenwithusandisheretostay.“beheretostay”isanidiom,whichmeans“beacceptedandusedbymostpeople”1.Themainideaofthetextis____.A.animalcloningisveryvaluableandcanbenefittheworldB.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbiddenC.animalcloningiswelldevelopedbecauseDollythesheepwasbornD.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture主旨大意2.WhichofthefollowingstatementsaboutcloningisNOTtrueaccordingtotext?A.Cloningissomethingthathasbeendevelopedquiterecently.B.Twinsthatlookexactlythesameareoriginallyfromthesameegg.C.Cloningisusedbygardenerstomakemoremoney.D.Animalcloningismuchmoredifficultthanplantcloning.细枝末节3.ThecloningofDollythesheepsucceededbecause____.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed4.Whichofthefollowingisnotanadvantageofcloning?A.Cloningcanbeusedformedicalpurposes.B.Largequantitiesoffoodcanbeproducedbycloning.C.Cloningcanhelpkeepanimalsfrombecomingextinct.D.Famouspersonswhohavepassedawaycanbecloned.5.Thesheepthatdonatedthesomaticcellmostprobablylived____years.A.3B.6C.9D.12推理判断Whenwecomeacrossquestionsthatrequireustoinfer,implyorconcludefromthepassage,rememberto:____________A.inferunknownfactsfromknownfactsB.usethedirectinformationfromthetextReading–IIIDetailreading(8ms)Fillintheblankusingtheinformationfromthetext.1.Cloningnotonlyhappensin_____________,butalsoin____________.2.Cloninghastwo______________.First,itcanhelpgardenersproduce________________________________________.Second,itisvaluableforresearchon__________________________andformedicalresearchon____________.Cloningplantsis____________whilecloninganimalsisvery______________.plantsanimalsmajorusescommercialquantitiesofplantsnewplantspeciesanimalsstraightforwardcomplicated3.Thewholescientificworld_______________________ofDolly.Atfirst,thefactthatDollyseemeddevelop_____wasvery_______________.Later,cloningscientistswere__________________tofindthatDolly’s_________weremore_____________toamucholderanimal.4.Cloningbecame__________.Usingcloningto____________________.followedtheprogressnormallyencouragingcastdownillnessesappropriatecontroversialCureseriousillnessesWhatdoyouthinkisthewriter’spointofviewinthisreadingpassage?Isitinfavourofcloningoragainstit?Ithinkthewriteris__________because_____________________________________________________________impartial/neutralhe/shedoesnotstateanypersonalopinionaboutcloning.ABA:Ithinkcloningisgoodforus.Because…B:Ithinkcloningisbadforus.Because…Iscloninggoodorbadforus?WritedownyourideaDescribethepictureinyourownwordsWhatisyouropinionofcloninghuman?PairWorkWatchthemovieanddiscussWriteapassagetitledIscloninggoodorbad?Yourpassageshouldincludethefollowing：1)Whatiscloning2)Advantagesofcloning3)Disadvantagesofcloning4)YouropinionofitHomework