考研英语例证题方法省公共课一等奖全国赛课获奖课件.pptx

passage2passage2Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100females,butthisratiodropstonearbalanceattheageofmaturity,andamong70-year-oldstherearetwiceasmanywomenasmen.Butthegreatuniversalofmalemortalityisbeingchanged.Now,boybabiessurvivealmostaswellasgirlsdo.Thismeansthat,forthefirsttime,therewillbeanexcessofboysinthosecrucialyearswhentheyaresearchingforamate.Moreimportant,anotherchancefornaturalselectionhasbeenremoved.Fiftyyearsago,thechanceofababy(particularlyaboybaby)survivingdependedonitsweight.Akilogramtoolightortooheavymeantalmostcertaindeath.Todayitmakesalmostnodifference.Sincemuchofthevariationisduetogenes,onemoreagentofevolutionhasgone.2段Thereisanotherwaytocommitevolutionarysuicide:stayalive,buthavefewerchildren.Fewpeopleareasfertileasinthepast.Exceptinsomereligiouscommunities,veryfewwomenhas15children.Nowadaysthenumberofbirths,liketheageofdeath,hasbecomeaverage.Mostofushaveroughlythesamenumberofoffspring.专题讲解之标点符号利用逗号：两个逗号之间，或一个逗号之后为补充说明成份，非主干逗号：两个逗号之间，或一个逗号之后为补充说明成份，是非主干冒号：冒号前后，普通是从抽象到详细，冒号后面内容解释前面内容。冒号：冒号前后，普通是从抽象到详细，冒号后面内容解释前面内容。冒号：冒号前后，普通是从抽象到详细，冒号后面内容解释前面内容。分号：分号前后为并列关系。分号：分号前后为并列关系。分号：分号前后为并列关系。引号：1）引用2）反语或语意转移引号：1）引用2）反语或语义转移97-153.WhenLloydNicksondies,hewill________.[A]facehisdeathwithcalmcharacteristicofeuthanasia[B]experiencethesufferingofalungcancerpatient[C]haveanintensefearofterriblesuffering[D]undergoacoolingoffperiodofsevendays08-4Foronething,theSouthcouldnotaffordtopartwithitsslaves.Owningslaveswas“likehavingalargebankaccount,”saysWiencek,authorofAnImperfectGod:GeorgeWashington,HisSlaves,andtheCreationofAmerica.②ThesouthernstateswouldnothavesignedtheConstitutionwithoutprotectionsforthe“peculiarinstitution,”includingaclausethatcountedaslaveasthreefifthsofamanforpurposesofcongressionalrepresentation.08-4Foronething,theSouthcouldnotaffordtopartwithitsslaves.Owningslaveswas“likehavingalargebankaccount,”saysWiencek,authorofAnImperfectGod:GeorgeWashington,HisSlaves,andtheCreationofAmerica.②Thesouthernstateswouldnothavesign