Book8 unit2 reading

.,cloning,Unit2,.,Top10inventionsin20thcentury:,.,NO.10,atomicbomb,.,NO.9,spaceshuttle,.,NO.8,television,.,NO.7,artificialsatellite,.,NO.6,aspirin,.,Airliner,NO.5,.,NO.4,personalcomputer,.,NO.3,Mobilephone,.,NO.2,internet,.,NO.1,cloning,.,Howmuchdoyouknowaboutcloning?,.,Aretheyclones?,.,naturalclone,man-madeclone,clone,.,Naturalcloneisonethatoccursfromthe“parent”inanaturalformofcloningwithouthumanhelp.,Man-madecloneisonethatproducedthroughhumanintervention(介入).,.,cactuskkts,pendulumorchidpendjlmkd,naturalcloningexamples,.,strawberry,twins,naturalcloningexamples,.,man-madecloningexamples,thefirstclonedcat,.,Theimportanteventsinanimalcloninghistory,.,In1952tadpolewascloned.Itisthefirstanimaltobecloned,.,In1963,anAsiancarp(鲤鱼）wascloned.Tenyearslater,aChinesescientistnamedTongdizhouclonedaEuropeancarp.,.,In1996,asheepcalledDolleywasborn.Itisthefirstmammaltobecloned.Itisconsideredtobethegreatestsuccessinthedevelopmentofcloning.,.,Amacaque（猕猴）wasclonedin2000.Laterscientistsclonedmanymonkeys.Itcanbeusedtotestoutsomediseasessuchasdiabetes(糖尿病）,.,Mules(骡子）havenoabilitytogivebirthtoababy.Amulewasclonedin2003.Itisthefirstanimalwhichlackfecundity(生育能力）tobecloned.,.,In1996,asheepcalledDollywasborn.Itisthefirstmammaltobecloned.Itisconsideredtobethegreatestsuccessinthedevelopmentofcloning.,Man-madeclone,.,Reading,Task1,Readthepassageandfindoutthemainideaofeachparagraph,.,Para.1Para.2Para.3Para.4Para.5,Cloningisawayofmakinganexactcopyofanotheranimalandplant.,Cloninghastwomajoruses.,TheproblemsofDolly.,TheeffectofDolly,Itisforbiddentoclonehumanbeing.,.,Task2DetailedReading,Readtheparagraph2andanswerthetwoquestions.,Whatarethetwomajorusesofcloning?,Whyisiteasiertomakecommercialplantclonesthananimalclones?,Firstly,gardenersuseitallthetimetoproducecommercialquantitiesofplants.Secondly,itisvaluableforresearchonnewplantspeciesandformedicalresearchonanimals.,Cloningplantsisstraightforwardwhilecloninganimalsisverycomplicated,.,Reading,Task3,Readthe9sentencesbelowthepictureandgetfamiliarwiththeprocedureofcloning,Fourfemalesheepparticipateinthecloningofanewsheep.Electricityisneededintheprocedure.SheepBprovidesasomaticcellfortheclone.Thelambistheexactcopyofthesheepwhichprovideseggcell.,F,T,F,T,.,Task4,Readparagraph3,trytogetsomeinformationaboutDollythesheepafteryourreading,thenanswerthequestionsonthescreenwithyourbookclosed,1.Whatwasthefirstclonefromanadultanimal?2.Atwhatagedidthisclonedie?3.Didshedeveloptheillnessofolderanimals?4.Whichonecanlivelonger,cloneonesorordinaryones?,Dollythesheep,Shewassixandahalfyearsold,Yes,shebecameserioulyill.,Ordinaryones.,.,Gothroughparagraphfourandfive,trytofindouttheadvantagesanddisadvantagesofcloning,Comprehending,.,Advantages,.,Disadvantages,.,Advantages,cloning,Disadvantages,usingcloningtocureseriousillnesses,helpsaveendangeredanimals,produceplantsofsimilarqualityforsale,evilleadershopingtoclonethemselvestoattaintheirambitions,religiousleadersraisedmoralquestions,animalclonesmaydeveloptheillnessofolderanimals,Expressyourideas,Areyouinfavorofcloningoragainstcloning?Stateyourpointofviewonit.,.,Asacoinhastwosides,everythinghastwoaspects.Ononehand,ifcloningisusedinacorrectwayitcanbringmanyconveniencetous.Ontheotherhand,ifcloningisusedinanevilwayitcancausemuchtrouble.Therefore,weshouldusecloninginacorrectway.,.,Consolidation,Cloneisawayofmakinganexact_ofanotheranimalorplant.Cloninghavetwo_uses.Firstly,gardenersuseitallthetimetoproduce_quantities.Secondly,itisvaluableforresearchonnewplant_andformedicalresearchonanimals.Butthroug