人教版选修8unit2cloningreadin课件

Unit2CloningPeriod1Warmingup&Reading

Unit2CloningPeriod1WarmingShewasc______whiletheotherswerebornnaturally.Itistheexactcopyofanothersheepandthefirstclonedmammal.lonedDollythesheep没爹没娘的多莉羊Shewasc______whiletheotherTheworld’sfirstclonedcat,kitten,namedCc.Itwascreatedusingacelltakenfromanadultcat,Rainbow.Theworld’sfirstclonedcat,DogSnuppywascreatedbyKoreanandAmericanscientistsDogSnuppywascreatedbyKorItsnameisAndi,thefirstgeneticallymodifiedmonkey.ItsnameisAndi,thefirstgecloned

rabbit克隆的荧光小猪(左)和正常小猪(右)克隆马及其“母亲兼姐姐”clonedrabbit克隆的荧光小猪(左)和克隆马及其AstrawberryplantTheplantproducesitsownrunners.NotonlyanimalsbutalsoplantscanbeclonedAstrawberryplantTheplantprAstemTakecuttingsfromgrowingplantstomakenewones.AstemTheyareidenticalinsexandappearance,whoareproducedfromthesameoriginalegg.TheyareidenticalinsexandQuestionsaboutcloning1.Whatiscloning?Cloningis

awayofmakinganexactcopyofanotheranimalorplant.Theyincludenaturalandman-madeclones.Questionsaboutcloning1.WhatClone?NaturalcloneMan-made

cloneNaturalcloneisonethatoccursfromthe“parent”inanaturalformofcloningwithouthumanhelp.Man-madecloneisoneproducedthroughhumanintervention(介入).Clone?NaturalcloneMan-madecInpairs,lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.Explainhowtheydiffer.WarmingupInpairs,lookatthesepicnaturalclonesnaturalclonesnatural

clonesnaturalclonesclonedanimals

clonedanimalsNO.Thefirsttwoareman-madeclones,

theresttwoarenaturalclones.NO.Thefirsttwoareman-madeCloning:whereisitleadingus?ReadingCloning:ReadingFast-readingTask1Readtheletter,thentrytofindthemainideaofeachparagraph.1.Cloningis______________________________2.Cloninghas____________uses.3.The_________ofDolly.4.The________ofDolly.5.Itis__________toclonehumanbeings.

awayofmakinganexactcopyofanotheranimalandplant.problemstwomajoreffectforbiddenFast-reading1.Cloningis_____1.Themainideaofthetextis____A.animalcloningisveryvaluableandcanbenefittheworld.B.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbiddenC.animalcloningiswelldevelopedbecauseDollythesheepwasborn.D.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture.Choosetherightansweraccordingtothetext.1.Themainideaofthetextis2.Itcanbeinferredfromthepassagethataclonedanimal_____.

A.usuallylivesaslongastheoriginalone

B.usuallyliveslongerthantheoriginalone

C.usuallylivesshorterthantheoriginalone

D.isusuallyashealthyastheoriginalone2.Itcanbeinferredfromthe3.WhichstatementisNOTtrue?A.Cloningissomethingthathasbeendevelopedquiterecently.B.Twinsthatlookexactlythesameareoriginallyfromthesameegg.C.Cloningisusedbygardenerstomakemoremoney.D.Animalcloningismuchmoredifficultthanplantcloning.3.WhichstatementisNOTtrue4.ThecloningofDollythesheepsucceededbecause____.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed4.ThecloningofDollythesh5.Thesheepthatdonatedthesomaticcellmostprobablylived____years.A.3B.6C.9D.125.ThesheepthatdonatedtheHowisacloneproduced?HowisacloneTrueoffalse:Fourfemalesheepparticipateinthecloningofanewsheep.Electricityisneededintheprocedure.SheepBprovidesasomaticcellfortheclone.ThelambistheexactcopyofsheepA.TFTFTrueoffalse:FourfemalesheAdvantagesofcloningMedicalcloningcouldproducecuresforseriousillnessesinhumans.2.Cloningplantscanproduceplantsofsimilarqualityforsale.3.Cloningplantscanbeusefulforresearchonnewplantspecies.4.Cloningcanhelpsaveendangered

animals.AdvantagesofcloningMedicalcProblemsordangersofcloning1.Animalclonesmaydeveloptheillnessesofolderanimals.2.Animalclonesmaydieyoungerthanthedonoranimals.

3.Evilleadersmaywanttoclonethemselves.4.Therearemoralobjectionstocloninghumanbeings.Problemsordangersofcloning1.Whatisthewritingstyle?Expositive（说明性的）

DescriptiveC.Argumentative（议论性的）D.Narrative2.Thewriter’sreactiontowardscloningis____

A.PositiveB.NegativeC.neutralChallengeyourself1.Whatisthewritingstyle?2.ConsolidationCloneisawayofmakinganexact_______ofanotheranimalorplant.Cloninghavetwo______uses.Firstly,gardenersuseitallthetimetoproduce_____________quantities.Secondly,itisvaluableforresearchonnewplant_________andformedicalresearchonanimals.Butthroughthe_________anddeathofDolly,cloninghasalotofproblems.Ontheotherhand,weknowcloningiscontroversialinsomecountriesfor__