Cloning -- Reading

《Cloning -- Reading》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Cloning:whereisitleadingus?Unit2Book8Unit2CloningAims:1.Gettoknowthedefinitionofcloning.2.Gettoknowthestrengthandweaknessofit.3.MakeclearhowthefirstcloningsheepDollycameintobeingandbeabletoretelltheprocedure.SkimmingSkimthetexttofindouttheanswerstothefollowingqu

2、estions.Questions1)Whatiscloning?2)What'stheusageofcloning?3)Whatareitsbenefits?4)Whatareitsproblems?Cloningisawayofmakinganexactcopyofanotheranimalandplant.Ithappensbothin______andin_______.Theyareboth___________plantsanimalsThedefinitionofcloningnaturalclonesW

3、hile-ReadingPara1“beheretostay”isanidiom,whichmeans“beacceptedandusedbymostpeople”Question1Whatisthetopicsentenceofthefirstparagraph？Cloninghasalwaysbeenwithusandisheretostay.TwinsTheyarebornnaturallyandidentical(一模一样)in____and___________.sexappearance_________

4、cloneNaturalNaturalcloneQuestion2.Whataretheusages?Firstly,…commercial…Secondly,…research…Para2Inthisparagraph,theword“straightforward”means____.A.uncomplicatedB.honestC.frankD.difficultCloningplantsisstraightforwardwhile(表对比)cloninganimalsisverycomplicated.Thec

5、loningofDollythesheepsucceededbecause____.A.it’seasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailedDetailsTheirdeterminationandpatienceofthesc

6、ientistspaidoff.DollythesheepQuestion:HowdoesDollydifferfromothersheep?Shewasclonedwhiletheotherswerebornnaturally.Dollywasa______sheep.bedifferentfromclonedIn1996,asheepcalledDollywasborn.Itisthefirstmammaltobecloned.Itisconsideredtobethegreatestsuccessinthedeve

7、lopmentofcloning.ChallengeyourselvesDoyouknowabout:HowdidtheclonedsheepDollycomeintobeing?Trueoffalse:Fourfemalesheepparticipateinthecloningofanewsheep.Electricityisneededintheprocedure.SheepBprovidesasomaticcellfortheclone.ThelambistheexactcopyofsheepA.TFTFFirs

8、t,thefactthatDollydeveloped______inanaturalwaywas__________.Later,thenewsthatDollyhadbecomeseriouslyillwas__________.Finally,theproblemthatoccurredtothescienti