人教英语选修8第二单元warming up and reading

warmingupandreading1.Whatisaclone?Acloneisananimaloraplantproducednaturallyorartificiallyfromthecellsofanotheranimalorplantandisexactlythesameasit.2.Whatcanbeclonedandhowmanykindsofclonedoyouknow?Bothplantsandanimalscanbecloned.Therearetwokindsofcloning:naturalcloneandman-madecloneClone?NaturalcloneMan-madecloneNaturalcloneisonethatoccursfromthe“parent”inanaturalformofcloningwithouthumanhelp.Man-madecloneisoneproducedthroughhumanintervention(介入).3.Inwhatwayisthecloningofplantsdifferentfromthecloningofanimals?Thecloningofplantsissimpleandrelativelyeasy.Itcanbedonebytakingcuttingsorlettingtheplantsproduceitsownrunners.Thecloningofanimalsismorecomplicated.Itwasnotachieveduntil1996anditisfullyexplainedinthefirstreading.TwinsTheyarebornnaturallyandidenticalinsexandappearance.AstrawberryplantThenewplantsthatgrowfromtherunnersareexactcopiesoftheoriginalplant.一株草莓依靠它沿地“爬走”的匍匐茎,一年内就能长出数百株草莓苗。富贵竹插枝即活Thegardenershouldcuttheplant,thenthecuttingproduceanothernewplant.1996cloningsheeps2001cloningcattle我国成功繁殖克隆兔体形要比普通兔大许多2002年5月中旬成功地繁殖了一只胚胎细胞克隆兔。2002cloningcats2002年4月十六日美国第一头克隆牛“艾米”产下牛犊喜作妈咪。2005cloningdogsInpairsdiscusswhatyouunderstandaboutcloning.Thenlistthequestionsyouwanttofindout.Shareyourlistswithoneanother.Pre-reading1.Whatisthemaintopic?A.Cloning.B.Dollythesheep.C.Itwillleadustosomeplaces.2.Whatisthewritingstyle?A.Expositive(说明性的).B.Descriptive.C.Argumentative(议论性的).AALearningtips:Thepassageiswrittenintheexpositivestyle.Thatistosaythetextisinthethirdpersonandinfactualandformallanguage.Itgivesdifferentpointsofviewanddoesnottrytopersuadethereadertomakeuphis/herownmind.3.Dollythesheep_____.A.lookedexactlylikethesheepthatprovidestheegg.B.wastheexactcopyofthesheepthatprovidesthenucleus.C.lookedlikethesheepthatgavebirthtoit.D.hadthecharacteristicsofallthreesheep.B4.Itcanbeinferredfromthepassagethataclonedanimal_____.A.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallydiesearlierthantheoriginaloneD.isusuallyashealthyastheoriginaloneC5.Whichofthefollowingisnotanadvantageofcloning?A.Cloningcanbeusedformedicalpurposes.B.Largequantitiesoffoodcanbeproducedbycloning.C.Cloningcanhelpkeepanimalsfrombecomingextinct.D.Famouspersonswhohavepassedawaycanbecloned.D6.WhichstatementisNOTtrue?A.Cloningissomethingthathasbeendevelopedquiterecently.B.Twinsthatlookexactlythesameareoriginallyfromthesameegg.C.Cloningisusedbygardenerstomakemoremoney.D.Animalcloningismuchmoredifficultthanplantcloning.A7.ThecloningofDollythesheepsucceededbecause_____.A.it’seasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailedB8.ThelambisthecloneofthecellfromsheepBbecause_____.A.itprovidestheeggcellB.itgivesbirthtothelambC.itprovidesthenucleusD.itisafemalesheep9.Thesheepthatdonatedthesomaticcellmostprobablylived____years.A.3B.6C.9D.12CD10.Themainideaofthetextis______A.animalcloningisveryvaluableandcanbenefittheworld.B.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbidden.C.animalcloningiswelldevelopedbecauseDollythesheepwasborn.D.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture.D11.WhichofthefollowisNOTaproblemordangerofcloningmentionedinthetext?A.Evilleadersmaywanttoclonethemselves.B.Animalclonesmaydeveloptheillnessofolderanimalsandmaydieyoungerthanthedonoranimals.C.Therearemoralobjectionstocloninghumanbeings.D.Toomuchcloningmayleadtothedestructionofthebalanceofnature.D12.Wecaninferfromthelastthreeparagraphsthat_____.A.thenormaldevelopmentofDollyhadnoeffectonthecloningofotherspecies.B.Dolly’sseriousdiseaseandfinaldeathdisturbedthewholeworld.C.Dollysuccessfullyclonedanewlambwiththehelpofcloningscientists.D.therewereargumentsaboutanimalcloningandconcernsaboutthefutureofcloning.DCarefulreadingThemainideaofeachparagraph.1.Cloningis________________________________________________________2.Cloninghas____________uses.3.The_________ofDolly.4.The________ofcloninginsociety.5.Thetowardscloning.awayofmakinganexactcopyofanotheranimalandplant.problemstwomajoreffectattitudesIthappensbothin________andin_______.Theycanbeclonedby__________and________.plantsanimalsthemselveshumansNaturalcloneMan-madeclonePara1:ThedefinitionofcloningTheword“controversial”inPara4probablymeans________.A.complicatedB.arguableC.importantPara4:TheimpactofDollyBTrueorfalse:1.PeoplefearedthatClonedHitlerswoulddoharmtotheworld.2.Alltheresearchintohumanbeingswillbeforbidden.3.Somecountrieswillusecloninginawiseway.Para5:People’sreactiontocloningManygovernmentsforbaderesearchintohumanbeings.TTFHitler:anevilleader意大利狂人医生:安蒂诺里冒死也要克隆人的科学家:布瓦瑟利耶1Readthepassageandanswerthesequestions.Comprehending1.Whatarethetwomajorusesofcloning?Thefirstuseistoproducecommercialquantitiesofplants.Thesecondistoresearchonnewplantsspeciesanddomedicalresearchonanimals.ProblemsordangersofcloningAnimalclonesmaydeveloptheillnessesofolderanimals.Animalclonesmaydieyoungerthanthedonoranimals.Evilleadersmaywanttoclonethemselves.Therearemoralobjectionstocloninghumanbeings.Adv