高中英语 Unit 2 Cloning Warming Up多媒体教学优质课件 北师大版选修8.ppt

unit2cloningwarmingup reading talkaboutcloning practiceexpressingandsupportinganopinion enablethestudentstoknowsomelawsaboutcloning lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman made thinkabouthowtheydiffer theplantproducesitsownrunners astrawberryplant astemtakecuttingsfromgrowingplantstomakenewones theyareidenticalinsexandappearance whoareproducedfromthesameoriginalegg shewasc whiletheotherswerebornnaturally itistheexactcopyofanothersheepandthefirstclonedmammal loned dollythesheep itsnameisandi thefirstgeneticallymodifiedmonkey dogsnuppywascreatedbykoreanandamericanscientists cloningisawayofmakinganexact ofanotheranimalorplant whatiscloning copy warmingup whatisthedifferenceamongthem clone clone alsocalledreproduceasexually 无性生殖 繁殖 isthecreationofcellsorwholeanimalsusingdnafromasingle parent withoutusingthenormalreproductive 有性生殖 process theclonehastheexactlysamednatotheparent itincludesnaturalandman madeclone what sclone 1 whatdoyouthinkthearticleisaboutbyreadingthisheadline step1 pre reading reading cloning whereisitleadingus step2 fast reading 1 whatisthewritingstyle expositive 说明文 descriptive 记叙文 c argumentative 议论文 2 whatisthemainideaofthepassage thepassagetellsusthatanimalcloningraised andscientistsarenotsureaboutits arguments future cloninghastwomajorusesandsuccessfulclone cloningisawayofmakinganexactcopyofanotheranimalandplant definition theeffectofdolly itisforbiddentoclonehumanbeings theproblemsofdolly 1 2 3 4 5 3 readthetextfasttogivetherightorderofthemainideaofeachparagraph trueorfalse fourfemalesheepparticipateinthecloningofanewsheep electricityisneededintheprocedure sheepbprovidesasomaticcellfortheclone thelambistheexactcopyofsheepa t f t f step3 careful reading whichofthefollowingstatementsaboutcloningisnottrueaccordingtotext a cloningissomethingthathasbeendevelopedquiterecently b twinsthatlookexactlythesameareoriginallyfromthesameegg c cloningisusedbygardenerstomakemoremoney d animalcloningismuchmoredifficultthanplantcloning thecloningofdollythesheepsucceededbecause a it seasiertocloneasheepthanotheranimalsb thescientistsweredeterminedandworkedhardwithpatiencec thescientistswererewardedandgotlotsofmoneyd manyotherattemptstoclonemammalsfailed thedeterminationandpatienceofthescientistswasrewarded paidoff makinganexactcopy commercial plantspecies animals straightforward breakthrough dollythesheep complicated normally natural 6 original alamb objections humanbeings imagination seriousillnesses media moral forbade themselves accumulate 冒死也要克隆人的法国科学家 布瓦瑟利耶 step4 further reading 恐怖分子头目本拉登 the10 month oldgirl kinderdiedinanaccidentinamerica clonecanproduceanexactgirlofher clonecanmakeawomanwhocan tgetpregnant 怀孕的 haveachild atpresentourcountrylacksorgans 器官 theclonedmancantransformhisorganstohisoriginalone 本体 ourcloningtechnologyisnotperfect someclonedbabieshavedeformity 畸形 frombirth cloningisvaluablefor researchonanimals medical advantagesofcloning medicalcloningcouldproduce forseriousillnessesinhumans cures cloningplantscanproducelarge ofplantsfor quantities cloningplantscanbeusefulforresearchon species plant sale new problemsofcloning animalclonesmaydevelopthe ofolderanimals illnesses animalclonesmaydie thantheoriginalanimals younger maywanttoclonethemselves thereare tocloninghumanbeings evilleaders moral objections 1 wecanconclude cloningisgoodforus cloninghastwoaspects ifcloningisusedinacorrectwayitcanbringmanyconveniencetous ifcloningisusedinanevilwayitcancausemuchtrouble asacoinhastwosides everythinghastwoaspects ononehand ifcloningisusedinacorrectwayitcanbringmanyconveniencetous ontheotherhand ifcloningisusedinanevilwayitcancausemuchtrouble ther