unit2CloningⅠ.阅读理解ATherearemanywaysinwhichhumancloningisexpectedtobenefithumans.DrRichardSeed,oneoftheleadingsupportersofhumancloningtechnology,suggeststhatitmaysomedaybepossibletocompletelychangetheagingprocessbecauseofwhatwelearnfromcloning.Scientistsbelievethattheymaybeabletotreatheartattackvictimsbycloningtheirhealthyheartcellsandinjectingthemintotheareasoftheheartthathavebeendamaged.HeartdiseaseisthenumberonekillerintheUSandseveralotherindustrialisedcountries.Therehasbeenabreakthroughwithhumanstemcells.Embryonicstemcellscanbegrowntoproduceorganstorepairorreplacedamagedones.Skinforburnvictims,braincellsforthebraindamaged,hearts,lungs,andkidneyscouldbeproduced.Bycombiningthistechnologywithhumancloningtechnology,itmaybepossibletoproduceneededorgansforsufferingpeoplethatwillbefreeofrejectionbytheirimmunesystems.ConditionssuchasAlzheimer’sdisease,Parkinson’sdisease,heartfailure,andotherproblemscanbecuredifhumancloninganditstechnologyarenotbanned.Thoughcurrenttreatmentsforinfertility(不生育)aregettingafairamountofpublicityinthenews,they,intermsofpercentages,arenotverysuccessful.Somedatashowsthatcurrentinfertilitytreatmentsarelessthan10percentsuccessful.Couplesgothroughphysicallyandemotionallypainfulproceduresforasmallchanceofhavingchildren.Manycouplesrunoutoftimeandmoneywithoutsuccessfullyhavingchildren.Humancloningcouldmakeitpossibleformanymoreinfertilecouplestohavechildrenthaneverbeforepossible.语篇解读：本文作者从几个方面介绍了克隆人技术给人类带来了利益。1．AccordingtoDrRichardSeed,wecanusecloningtechnologyto________.A．producemoreanimalsB．makepeoplelivehappilyC．makepeoplelookyoungerD．curepeopleofmanydiseases解析：选C推理判断题。根据第二段中的“tocompletelychangetheagingprocess”可知，RichardSeed认为克隆技术可以彻底改变变老的进程。因此推知，克隆技术可以使人们看上去更年轻。2．Wecanlearnfromthepassagethat________.A．cloninghasalreadybeenusedtotreatheartdiseaseB．wecantreataman’sheartdiseasebycloningheartsC．mostpeopleinindustrialcountriessufferfromheartdiseaseD．morepeopledieofheartdiseasethanofotherdiseasesintheUS解析：选D细节理解题。根据第三段最后一句可知，心脏病是美国和其他工业化国家的头号杀手，因此在美国死于心脏病的人要比死于其他疾病的人多。3．Whatisthemainideaofthelastparagraph?A．Withcloninginfertilecouplescouldhavechildren.B．Treatmentofinfertilityisnotsuccessful.C．Infertilecouplessufferalotphysicallyandmentally.D．Itisdifficultforcouplestohavemorechildrennow.解析：选A段落大意题。联系全文可知，本文的主题是人类克隆技术。最后一段点明了现在治疗不孕的成功率很低，许多夫妇饱受煎熬，最后说明了利用人类克隆技术可以使不孕的夫妇有自己的孩子，因此A项正确。4．Whatistheauthor’sattitudetowardshumancloning?A．Supportive.B．Doubtful.C．Cautious.D．Curious.解析：选A推理判断题。根据文章第一句，特别是关键词benefit及第二至五段(都是讲人类克隆技术会给人类带来益处)可推知，作者对人类克隆技术持支持的态度。BLookingbackonmychildhood,Iamconvincedthatnaturalistsarebornandnotmade.Althoughwewerebroughtupinthesameway,mybrothersandsisterssoonabandonedtheirpressedflowersandinsects.Unlikethem,Ihadnoearformusicandlanguages.IwasnotanearlyreaderandIcouldnotdomentalarithmetic.BeforeWorldWarⅠwespentoursummerholidaysinHungary.Ihaveonlythedim(模糊的)memoryofthehousewelivedin,ofmyroomandmytoys.NordoIrecallclearlythelargefamilyofgrandparents,aunts,unclesandcousinswhogatherednextdoor.ButIdohave...
