高中英语人教版选修8Unit2 Readingppt课件

.,.,Cloning,Unit2Reading,.,.,Hadhimcloned?,Whatisaclone?,Acloneisgroupofcellsororganismsthataregeneticallyidenticalandhavebeenproducedasexually(无性生殖/繁殖)fromthesameoriginalcell.Theyincludenaturalandman-madeclones.,cloned,.,Man-madeclone,Warmingup,Twokindsofclones:,isonethatoccursinanaturalformofcloningwithouthumanshelp.,isonethatisproducedthroughhumanintervention(介入).,Naturalclone,.,Astrawberryplant,Thenewplantsthatgrowfromtherunnersareexactcopiesoftheoriginalplant.,Naturalclone,.,Banyan,Naturalclone,.,Luckybamboo,Thegardenercutstheplant,andthenthecuttingproducesanothernewplant.,Man-madeclone,.,Growingnewplants,Man-madeclone,.,Twins,Theyarebornnaturallyandidenticalinsexandappearance.,Naturalclone,.,MonkeyKing,Naturalcloneorman-madeclone?,.,Shewasclonedwhiletheotherswerebornnaturally.,HowdoesDollydifferfromothersheep?,Man-madeclone,In1996,asheepcalledDollywasborn.Itisthefirstmammaltobecloned.Itisconsideredtobethegreatestsuccessinthedevelopmentofcloning.,.,Thefollowingaresomephotosaboutcloning.Seehowmuchyouknowaboutit.,.,2001cloningcattle,.,2002cloningcats,.,cloningrabbits,.,2003Cloninghorse,.,TheCloningFluorescentpig(left)andthenormalpig(right),.,2005Cloningdogs,.,2005Cloningwolves,.,2015Cloningcamel,.,2018Cloningmonkey,.,HowwasDollythesheepborn?,.,Hey,howIwasborn?,.,Reading,Cloning:WhereisitLeadingus?,.,eggcell,卵细胞,nucleus,细胞核,体细胞,somaticcell,embryo,胚胎,.,Fastreading,Readthetextquickly.(3min)Underlineorcirclesomethingyouthinkisimportant.,.,Themainideaofthetextis_A.animalcloningisveryvaluableandcanbenefittheworld.B.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbiddenC.animalcloningiswelldevelopedbecauseDollythesheepwasborn.D.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture.,Mainidea,.,awayofmakinganexactcopyofanotheranimalandplant.,1.The_ofcloning:_,2.The_and_ofcloning.,3.The_ofDolly(the_and_ofDolly).,4.The_ofDolly.,5.Peoples_tocloning.,Themainideaofeachparagraph.,problems,uses,impact,reaction/attitudes,death,birth,procedures,definition,.,Carefulreading,Readthetextcarefully.Answersomequestions.,.,1.ThecloningofDollythesheepsucceededbecause_.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed,B,Details,.,2.ThelambisthecloneofthecellfromsheepBbecause_.A.itprovidestheeggcellB.itgivesbirthtothelambC.itprovidesthenucleusD.itisafemalesheep,Details,.,.,.,3.Thesheepthatdonatedthesomaticcellmostprobablylived_years.A.3B.6C.9D.13,Judgment,4.Inthesecondparagraph,theword“straightforward”means_.uncomplicatedB.honestC.frankD.difficult,Guessing,.,5.WhichofthefollowisNOTaproblemordangerofcloningmentionedinthetext?A.Evilleadersmaywanttoclonethemselves.B.Animalclonesmaydeveloptheillnessofolderanimalsandmaydieyoungerthanthedonoranimals.C.Therearemoralobjectionstocloninghumanbeings.D.Toomuchcloningmayleadtothedestructionofthebalanceofnature.,Details,.,6.Whataboutthewritersattitudetowardcloninginthispassage?Thewriterisagainstcloning.Thewriterisinfavorofcloning.Thewriterdoesnotstateanypersonalopinionaboutcloning.D.Thewriterisinagreementwithcloning.,Inferencing,.,Consolidation,Cloneisawayofmakinganexact_ofanotheranimalorplant.Cloninghavetwo_uses.Firstly,gardenersuseitallthetimetoproduce_quantities.Secondly,itisvaluableforresearchonnewplant_andformedicalresearchonanimals.Butthroughthe_anddeathofDolly,cloninghasalotofproblems.Ontheotherhand,weknowcloningiscontroversialinsomecountriesfor_and_reasons.,copy,major,commercial,species,birth,moral,religious,.,1Cloningmeansmakingacopyofananimaloraplant.2Gardenerscanmakealotofmoneybycloningplants.3Cloninganimalsisascomplicatedascloningplants.4Dollythesheepwasthefirstsuccessfulcloneofamammal.5Naturalclonehappeninanimalsaswellasinplants.,F,T,F,T,T,exactanother,TorF,commercial,more(than),breakthrough,.,1.Whatisthewritingstyle?A.Expositive（说明性的）B.DescriptiveC.Argumentative（议论性的）D.Narrative,Challengeyourself,2.Itsuddenlyopenedeverybodyseyestothepossibilityofusingcloningtocureseriousillnessandeventoproducehumanbeings.(translation),它突然打开了人们的眼界,让人们看到了利用克隆技术来治疗重病甚至克隆出人类的可能。,.,Challengeyourself,Sadlythesamearbitraryfateaffectedotherspecies,suchasclonedmice.,3.Inanunfortunateway,themiceandDollythesheephadnochoicebuttodieyoung.Nooneimaginedthatthiswouldhappenandsonoonecouldpreventit.(Findasentencewhichhasthesimilarmeaning),.,Iscloninggoodorbadforus?AdvantagesDisadvantagesGroup1and2Group3and4,Discussion,.,Brainstorming,5minutes,1.Medicalcloningcouldproducecuresforseriousillness.2.Cloningplantscanproduceplantsofsimilarqualityforsale.3.Cloningplantscanbeusefulforresearchonnewplants.4.Maybringextinctanimalsbacktolife,1.Animalclonesmaydeveloptheillnessesofolderanimals.2.Animalclone