高中英语 reading of 2课件 新人教版选修8.ppt

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1、CloningWhichgroupisrealtwins?Warmingup(5ms)TwinsClone?NaturalcloneMan-madecloneNaturalcloneisonethatoccursfromthe“parent”inanaturalformofcloningwithouthumanhelp.Man-madecloneisoneproducedthroughhumanintervention(介入).awayofmakinganexactcopyofanotheranimalorplant.Inpairs,lookatthesepicturesa

2、nddiscusswhichonesarenaturalclonesandwhichonesareman-made.Explainhowtheydiffer.DiscussionAstrawberryplantThenewplantsthatgrowfromtherunnersareexactcopiesoftheoriginalplant.NaturalcloneGrowingnewplantsMan-madeclone富贵竹插枝即活Thegardenercutstheplant,andthenthecuttingproducesanothernewplant.Man-m

3、adecloneTwinsTheyarebornnaturallyandidenticalinsexandappearance.NaturalcloneShewasclonedwhiletheotherswerebornnaturally.Dollywasa______sheep.clonedHowdoesDollydifferfromothersheep?Man-madecloneIn1996,asheepcalledDollywasborn.Itisthefirstmammaltobecloned.Itisconsideredtobethegreatestsuccess

4、inthedevelopmentofcloning.Thefollowingaresomephotosaboutcloning.Seehowmuchyouknowaboutit.2001cloningcattle2003Cloninghorsecloningrabbits2002cloningcats2005cloningdogs克隆的荧光小猪(左)和正常小猪(右)PredictionWhatdoyouthinkthearticleisaboutbyreadingthisheadline?CLONING:WHEREISITLEADINGUS?Whatisthemainide

5、aofthepassage?Thepassagetellsusthatanimalcloningraised__________andscientistsarenotsureaboutits______.argumentsfutureWhatisthewritingstyle?Expositive(说明文)Descriptive（记叙文）C.Argumentative（议论文）Organization(firstreading)______Whatisthecloning.______Twomajorusesofcloning.______Thebirthanddeatho

6、fDolly.______ControversybroughtbyDolly.2134-5HowdoesthecloningofDollythesheepwork?Themainideaofthetextis____A.animalcloningisveryvaluableandcanbenefittheworld.B.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbiddenC.animalcloningiswelldevelopedbecauseDollythesheepwasborn.D.animalclonin

7、graisedargumentsandscientistsarenotsureaboutitsfuture.主旨大意2.ThecloningofDollythesheepsucceededbecause____.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattem