Unit9HumanBiologyLesson1Tocloneornottoclone課件高中英語北師大版選擇性

Unit9HumanBiologyLesson1Tocloneornottoclone?教材分析本單元第一課是一篇介紹克隆的文章。從人工克隆羊多莉到克隆猴“中中”和“華華”說起，陳述人工克隆技術(shù)的潛在意義和所遭受的輿論質(zhì)疑。最后得出結(jié)論不能因工具被人誤用就否認(rèn)工具本身的價(jià)值。教學(xué)目標(biāo)在本課學(xué)習(xí)結(jié)束時(shí)，學(xué)生能夠：1.獲取文章主旨大意；2.理解人工克隆技術(shù)潛在的意義和所遭受的質(zhì)疑；3.反思人類使用工具的方法，拒絕濫用工具。教學(xué)重難點(diǎn)【教學(xué)重點(diǎn)】1.獲取文章主旨大意；2.理解人工克隆技術(shù)潛在的意義和所遭受的質(zhì)疑?！窘虒W(xué)難點(diǎn)】反思人類使用工具的方法，拒絕濫用工具。Watchthevideoandanswerthefollowingquestions.Doyouwanttobecloned?Whyorwhynot?Whatdoyouknowaboutcloning?HowdoesDollydifferfromothersheep?克?。–lone）是指生物體通過體細(xì)胞進(jìn)行的無性繁殖，以及由無性繁殖形成的基因型完全相同的后代個(gè)體組成的種群。通常是利用生物技術(shù)由無性生殖產(chǎn)生與原個(gè)體基因完全相同的個(gè)體或種群。Lead-in克隆羊多莉（Dolly），于1996年7月5日誕生于英國愛丁堡市羅斯林研究所，是一只通過現(xiàn)代工程創(chuàng)造出來的雌性綿羊，也是世界上第一個(gè)成功克隆的人造動(dòng)物。ReadingWHAT本文話題為“克隆還是不克隆”；

本文介紹了克隆科學(xué)的概念，并舉例說明了第一只成功克隆的動(dòng)物多莉和中國科學(xué)家首次成功克隆的靈長類動(dòng)物。此外，克隆科學(xué)的探索與發(fā)展仍然是一個(gè)具有爭議的話題，它既可能為醫(yī)學(xué)研究和人類健康發(fā)展做貢獻(xiàn)也可能引起人們有關(guān)道德方面的擔(dān)憂。語篇研讀——TocloneornottocloneWHY本文通過介紹克隆科學(xué)的概念、成功案例，以及關(guān)于克隆科學(xué)潛在的利弊，引導(dǎo)學(xué)生初步了解一些有關(guān)生命科學(xué)方面的知識(shí)，同時(shí)也能用辯證性思維深入思考是否需要發(fā)展克隆科學(xué)。語篇研讀——TocloneornottocloneSuccessfulexamplesToCloneornottoCloneDefinitionTextbuilder—ToCloneornottoCloneOpinionsCloning1.makesan____________aplantoranimal2.developsitnaturallyor________Naturalcloning●Ithastakenplaceforgenerations.●

Twoexamples:1.Gardenerstakeacuttingfromaplantandplaceitinamedium.2._____________areproducedfromthesameegg.Firstcloningandfirst-clonedprimatesexactcopyofartificiallyIdenticaltwinsDollydevelopedanillnesslaterandlivedforsixandahalfyears.Dollywasthe______mammaltobeclonedartificially.FirstcloningSinceDolly,morethan20mammal______havebeencloned.SuccessfulexamplesTextbuilder—ToCloneornottoCloneTheseclonedanimalshad_______________________________withDolly.speciesfirstasimilarpatternofhealthproblemsScientistshavehadtoworkhardtobreakthe______________togetprimatewitheditedgenes.In2018,Chinaannouncedthattwo________hadbeencloned.First-clonedprimatesThebreakthroughmaybehelpfulfor________________________________.Textbuilder—ToCloneornottoClonemonkeystechnicalbarriersmedicalSuccessfulexamplesresearchandhumanhealthSuccessfulexamplesToCloneornottoCloneDefinitionTextbuilder—ToCloneornottoCloneOpinionscuresforeffectivetreatmentsethicalquestionsabused

Readthefirstfourparagraphsagain.Askandanswerthequestionsinpairsbasedonyournotes.Whatiscloning?

Cloningistheprocessofmakinganexactcopyofaplantoranimalanddeveloping

iteithernaturallyorartificially.(2)Whatexamplesofnaturalcloningaregiven?

Anexampleofnaturalcloningistakingacuttingfromaplantandputtingitinsoil,

andanotherisidenticaltwins.(3)Whatwasthefirstclonedmammal?Whathappenedtoher?ThefirstsuccessfullyclonedmammalwasasheepnamedDolly.Shedevelopedanillnessthatismorenormallyfoundinmucholderanimalsandlivedforsixandahalfyears.Reading(4)Howhasthescienceofcloningdevelopedsincethefirstclonedmammal?

Scientistshavebeenabletocloneanimalsofotherspecies.(5)Whatdevelopmentincloningwasannouncedin2018?Whatwasspecialaboutit?

Thefirsttwolong-tailedmonkeyswerecloned.Cloningaprimateismoredifficultthancloningotheranimals.(6)ForhowlongdidDr.SunQiang’steamwork?Whydidtheyworksohard?

Morethan5years.Togetanimalswitheditedgenesandproduceanimalmodelsthatarehelpfulformedicalresearchandhumanhealth.ReadingCompletethesummaryusingtheinformationinthearticle.PracticetwinsartificiallyspeciesbarrierseditedScientistssaythatthismajorbreakthroughoffersthe6_________tocreatemonkeyswith7________genestogivemore8_________researchresultsandperhapsleadto9________forvariousdiseases.Whilstscientistsinsistitis10________to