新课标人教版选修八Book8 Unit2 Using language.ppt

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1、Unit2cloningusinglanguageTheReturnoftheDinosaurs?Answerthefollowingquestions:1.HaveyoueverseenthefilmJurassicPark?Dopeoplelikethisfilm?Whatanimalsdoyouseeinthefilm?Aretheyrealdinosaurs?Warmingup(4ms)Doyouthinkitispossibletoclonedinosaurs?Ifnot,why?Ifyes,doyouthinkthat’sgoodforhumanbeing

2、s?Why?Thewriterofthetext_____A.isexcitedbythepossibilityofcloningfierceandextinctanimalsB.believesthatextinctanimalscanbebroughtbacktolifebycloningC.thinksitimpossibleorunsuitabletocloneextinctanimalslikedinosaursD.dreamsofdinosaursreturningtotheearth2.ThefilmJurassicParkispopularbecaus

3、e_____.A.peopleareinterestedinthesubjectofcloningB.alltheactorsaredinosaursC.itwasdirectedbyascientistwhoclonesdinosaursD.itprovesveryinteresting细枝末节A3.Whichofthefollowingistrue?____Micewereclonedin1981.B.Dollythesheepwasthefirstclonedanimal.C.Thenameoftheclonedcowis“Bison”D.Chinawassuc

4、cessfulincloningmammals.4.ThereasonswhyagroupofclonedanimalsalldieofthesameillnessdoNOTinclude____.A.theyhavethesamearrangementofgenesB.thereisn’tenoughdiversityinthegroupforittoovercomeillnessesC.theillnessisanewoneD.theirarrangementofgenescannotresistthatnewdisease5.Wecaninferfromthet

5、extthat____A.scientistsareexperimentingtoclonedinosaursB.dinosaurswillneverreturntotheearthC.clonedanimalswillonlyliveinthezooD.theDNAofdinosaurscanonlysurvive10000yearAnswerthefollowingquestions:1.Whyshouldn’tyoucloneanextinctanimalifthereisn’tenoughdiversityinthegroup?2.Whyisitwrongto

6、cloneanextinctanimalifitwouldhavetoliveinazoo?Reading1.Whyshouldn’tyoucloneanextinctanimalifthereisn’tenoughdiversityinthegroup?Keys:Therewillnotbeenoughgeneticvariationinthegrouptobeabletoresistnewillnesses.2.Whyisitwrongtocloneanextinctanimalifitwouldhavetoliveinazoo?Itisnotagoodideat

7、ocloneananimalthatwouldhavetoliveinazoobecauseitisnotasuitablehabitattodevelopandincreaseitsnumbers.Thezooisnotanaturalenvironmentforawildanimal.GivesomereasonswhyitiseitherimpossibleorunsuitabletocloneextinctanimalsReason1:Reason2:Reason3:YouneedAlleffortsofcloningananimalwill