高中英語 Unit 2 Cloning Reading課件3 新人教版選修8.ppt

period1 2warmingupandreadingi cloning lookatthefollowingpicturesandanswerthequestions it sthemostfamoussheepintheworld doyouknowhowdollyisdifferentfromothersheep warmingup 5ms shewasclonedwhiletheotherswerebornnaturally itisthecopyofanothersheep whatiscloning cloningisawayofmakinganexactcopyofanotheranimalorplant man madecloningexamples cactus strawberry pendulumorchid 吊蘭 naturalcloningexamples 1 cloningmeansmakingacopyofananimal 2 gardenerscanmakealotofmoneybycloningplants 3 cloninganimalsisascomplicatedascloningplants f t f torf t t 4 dollythesheepwasthefirstsuccessfulcloneofamammal 5 naturalcloneshappeninanimalsaswellasinplants 6clonecanbefrombothnaturalcloneandman madeclone t 7onlystrawberriesandcactus 仙人掌 arenaturalclones f step3 prediction whatdoyouthinkthearticleisaboutbyreadingthisheadline cloning whereisitleadingus 1 whatisthemaintopic a cloning b dollythesheep c itwillleadustosomeplaces scanning cloninghastwomajoruses cloningisawayofmakinganexactcopyofanotheranimalandplant theeffectofdolly itisforbiddentoclonehumanbeings theproblemsofdolly 1 2 3 4 5 mainideaofeachparagraph cloningisawayofmakinganexactcopyofanotheranimalandplant para1 1 whatisaclone naturalclone 2 whendoesaclonehappen ithappensinplantswhengardenerstakecuttingsfromgrowingplantstomakenewones inplants naturalclone 2 whendoesaclonehappen ithappensinplantswhengardenerstakecuttingsfromgrowingplantstomakenewones inplants inanimals twinsareproducedfromthesameoriginaleggandareidenticalinsexandappearance 一株草莓依靠它沿地 爬走 的匍匐莖 一年內(nèi)就能長出數(shù)百株草莓苗 otherexamples naturalclone man madeclone inplants inanimals dolly是世界上第一例用體細胞 乳腺上皮細胞 通過細胞核移植技術(shù) 在復雜的人工操作下 得到的一只小綿羊 nucleus becomplicated man madecloningexamples theimportanteventsincloninghistory in5000b c 谷物選種 in1978 thefirstcaseoftubeinfant 試管嬰兒 appeared dollyandthefatherofdolly lanwilmut 伊恩 威爾姆 in1996 thefamoussheep dolly wasclonedsuccessfully in1998aclonedox in2002 thefirstclonedcatintheworld nowadays cloneddog mouse rabbit goat ox pigappeared chinabecometheseventhcountrythathastheabilitytoclonepigs aseriesofthingsarecloned mainidea cloninghastwomajoruses para2 firstly gardenersuseittoproducecommericalplants secondly itisvaluableforresearchonnewplantspeciesandformedicalresearchonanimals back discussingroups howlongdiddollylive howlongdoestheorginalsheeplive whataretheadvantagesofcloning whydidgovernmentsforbidresearchintohumancloning what syouropinion why mainidea theproblemsofdolly para3 1 thenewsthat 2 dolly sillnessesweremore amucholderanimal 3 dollylivedforsixyears thelifeoftheoriginalsheep dollyhadbecomeseriouslyillcame appropriateto halfthelengthof mainidea theeffectofdolly 1 dolly sappearanceraisedastormofobjections 2 itopenedeverybody seyestothepossibilityofusingcloningtocureseriousillnesses andevenproducinghumanbeings para4 ba mainidea itisforbiddentoclonehumanbeings para5 scientistswonderwhethercloningwillhelporharmus ba iscloningpeopleagoodthing orabadthing 克隆人是福音 還是惡兆 thinking 1 克隆技術(shù)現(xiàn)在還不成熟 克隆人可能有很多先天性生理缺陷 2 克隆人的身份難以認定 他們與被克隆者之間的關(guān)系無法納入現(xiàn)有的倫理體系 反對克隆人 3 克隆技術(shù)有可能被濫用 成為恐怖分子的工具 4 從生物多樣性上來說 大量基因結(jié)構(gòu)完全相同的克隆人 可能誘發(fā)新型疾病的廣泛傳播 對人類的生存不利 1 不讓我們克隆人 就是不讓我們修正我們的錯誤 人類歷史難道能夠這樣構(gòu)造嗎 紐約時報書評 2 當然應該 克隆 人 如果誰第一個掌握了這個技術(shù) 他就是我真正的 也是唯一的競爭對手 比爾 蓋茨 支持克隆人 意大利狂人醫(yī)生 安蒂諾里 冒死也要克隆人的科學家 布瓦瑟利耶 themainideaofthetextis animalcloningraisedarguments 引起爭論 andscientistsarenotsureaboutitsfuture 主旨大意 2 whichofthefollowingstatementsaboutcloningisnottrueaccordingtotext a cloningissomethingthathasbeendevelopedjustrecently b twinsthatlookexactlythesameareoriginallyfromthesameegg c cloningisusedbygardenerstomakemoremoney d animalcloningismuchmoredifficultthanplantcloning 細枝末節(jié) a 3 thecloningofdollythesheepsucceededbecause thedeterminationandpatienceofthescientistswasrewarded 細枝末節(jié) 4 thelambisthecloneofthecellfromsheepbecause a itprovidestheeggcellb itgivesbirthtothelambc itprovidesthenucleusd itisafemalesheep 1 inthesecondparagraph theword straightforward means a uncomplicatedb honestc frankd difficult 猜詞 itcanbeinferredfromthepassagethat aclonedanimalusuallydiesearlierthantheoriginalone 推理 6 thesheepthatdonatedthesomaticcellmostprobablylived years a 3b