高中英语高三高考复习研讨阅读课《Cloningwhereisitleadingus》学案

1、APublicLessonMainlyonReadingandDealingwithNewWordsandExpressionsMar23,2012ClassProcedureIWarming-up:themovieNeverLetMeGonReadingandcomprehension(groupwork)i findthekeyword(s)ofeachparagraphandthengetitsmainidea;ii makesureoftheimportantdetailsofthepassage;iiiword-guessingandsentence-paraphrasing.(Wr

2、iteyouranswersontheblackboard)川After-classdiscussionwhat'youropiniononcloning?Dosomeresearchanddiscusswithothers.WordBankexact歹z?ktadj.确切的，objection?b'd?ek?in.反publicimagination公众舆论abundant?'b?nd?ntadj.丰nuclearcrisis核危机commercialk?'m?:?adjimpact'?np?ktn.影响embryo'embr?jn.胚胎con

3、servativek?n's?:v?t?LearningTipsonhowtounderstanddifficultwordsandexpressions1. Makefulluseofthecontext上下文）.2. ReplacethedifficultpartswithsimpleEnglish.TextCLONING:WHEREISITLEADINGUS?CloninghasalwaysbeenwithusandisheretostayItisawayofmakinganexactcopyofanotheranimalorplant.Ithappensinplantswhen

4、gardenerstakecuttingsfromgrowingplantstomakenewones.Italsohappensinanimalswhentwinsidenticalinsexandappearaneeareproducedfromthesameoriginalegg.Thefactisthatthesearebothexamplesofnaturalciones.Cloninghastwomajoruses.Firstly,gardenersuseitallthetimetoproducecommercialquantitiesofplants.Secondly,itisv

5、aluableforresearchonnewplantspeciesandformedicalresearchonanimals.Cloningplantsisstraightforwardwhilecloninganimalsisverycomplicated.Manyattemptstoclonemammalsfailed.Butatlastthedeterminationandpatienceofthescientistspaidoffin1996withabreakthrough-thecloningofDollythesheep.Theprocedureworkslikethis:

6、Ontheonehand,thewholescientificworldfollowedtheprogressofthefirstsuccessfulclone,Dollythesheep.Thefactthatsheseemedtodevelopnormallywasveryencouraging.ThencamethedisturbingnewsthatDollyhadbecomeseriouslyill.CloningscientistsweredisappointedtofindthatDolly'illnessesweremoreappropriatetoamucholder

7、animal.AltogetherDollylivedsixandahalfyears,halfthelifespanoftheoriginalsheep.Sadlythesamearbitraryfateaffectedotherspecies,suchasclonedmice.Thequestionsthatconcernedallscientistswere:Wouldthisbeamajordifficultyforallclonedanimals?Wouldithappenforever?Coulditbesolvedifcorrectionsweremadeintheirresea

8、rchprocedure?”Ontheotherhand,cloningbecamecontroversialDolly"sappearanceraisedastormofobjectionsandhadagreatimpactonthemediaandpublicimagination,whileitalsoopenedeverybody'eyestothepossibilityofusingcloningtocureseriousillnessesandeventoproducehumanbeings.Althoughatpresenthumaneggcellsandem

9、bryosneededforcloningresearcharedifficulttoget,newspaperswroteofevilleadershopingtoclonethemselvestoachievetheirambitions.Religiousleadersalsoraisedmoralquestions.Governmentsbecamenervousandmoreconservative.Somebegantoreformtheirlegalsystemsandbannedresearchintohumancloning,butothercountries,likeChi

10、naandtheUK,continuedtogatherevidenceoftheabundantmedicalaidthatcloningcouldprovide.However,scientistsstillwonderwhethercloningwillhelporharmusandwhereitisleadingus.Willithelptreatdiseasesandsavelives?OrwillitleadusintoatrapofourownmakingandenduplikethenuclearcrisisinJapan?PersonallyIdobelievethatwed

11、on'thavetoriskourfuturetofindoutwhethercloningisagoodideaornot.LanguageinUseGooverthewholepassageandfillintheblankswithsomewordsorexpressionsyou'velearnedtoday.1. ThestunningperformanceofJeremyLin（林书豪）isenoughtothefactthathehasthetalenttobeatopbasketballplayer.Nowmillionsoffansaroundtheglobe

12、hisprogressinNBA.2. Whenmakingforeignfriends,weshouldalwaysbearthisinmind:culturaldifferencesarecommonandtheyare.There'snowaywecanavoidthem.3. Afterfiveyearsofmarriage,NicholasTse（谢霆锋）andCeciliaCheungfinallygotdivorced.Peoplesaytheywerejustyoungandmadeandecisionwithoutmuchthinking.4. Theschoolmaster'sorderthatweshouldonlyhaveonedayofff