Theadvantagefaroutweighthedisadvantages. 　　2.TheadvantagesofAaremuchgreaterthanthoseofB. 　　3.AmaybepreferabletoB,butAsuffersfromthedisadvantagesthat... 　　4.Itisreasonabletomaintainthat...butitwouldbefoolishtoclaimthat... 　　5.Forallthedisadvantages,ithasitscompensatingadvantages. 　　6.Likeanythingelse,ithasitsfaults. 　　7.AandBhasseveralpointsincommon. 　　8.AbearssomeresemblancestoB. 　　9.However,thesameisnotapplicabletoB. 　　10.AandBdifferinseveralways. 　　11.Evidently,ithasbothnegativeandpositiveeffects. 　　12.Peopleusedtothink...,butthingsaredifferentnow. 　　13.ThesameistrueofB. 　　14.WonderingasAis,ithasitsdrawbacks. 　　15.ItistruethatA...,butthechieffaults(obviousdefects)are... 　　二)原因 　　1.Anumberoffactorsareaccountableforthissituation. 　　Anumberoffactorsmightcontributeto(leadto)(accountfor)thephenomenon(problem). 　　2.Theanswertothisprobleminvolvesmanyfactors. 　　3.Thephenomenonmainlystemsfromthefactthat... 　　4.Thefactorsthatcontributetothissituationinclude... 　　5.Thechangein...largelyresultsfromthefactthat... 　　6.Wemayblame...,buttherealcausesare... 　　7.Partoftheexplanationsforitisthat... 　　Oneofthemostcommonfactors(causes)isthat... 　　Anothercontributingfactor(cause)is... 　　Perhapstheprimaryfactoristhat… 　　Butthefundamentalcauseisthat... 　　三)后果 　　1.Itmaygiverisetoahostofproblems. 　　2.Theimmediateresultitproducesis... 　　3.Itwillexerciseaprofoundinfluenceupon... 　　4.Itsconsequencecanbesogreatthat... 　　四)批驳 　　1)Itistruethat...,butonevitalpointisbeingleftout. 　　2)Thereisagrainoftruthinthesestatements,buttheyignoreamoreimportantfact. 　　3)Somepeoplesay...,butitdoesnotholdwater. 　　4)Manyofushavebeenundertheillusionthat... 　　5)Acloseexaminationwouldrevealhowridiculousthestatementis. 　　6)Itmakesnosensetoarguefor... 　　7)Toomuchstressplacedon...mayleadto... 　　8)Suchastatementmainlyrestsontheassumptionthat... 　　9)Contrarytowhatiswidelyaccepted,Imaintainthat... 　　五)举例 　　1)Agoodcaseinpointis... 　　2)Asanillustration,wemaytake... 　　3)Suchexamplesmightbegiveneasily. 　　4)...isoftencitedasanexample. 　　六)证明 　　1)Noonecandenythefactthat... 　　2)Theideaishardlysupportedbyfacts. 　　3)Unfortunately,noneoftheavailabledatashows... 　　4)Recentstudiesindicatethat... 　　5)Thereissufficientevidencetoshowthat... 　　6)Accordingtostatisticsprovedby...,itcanbeseenthat... 　　七)开篇 　　1)Manynationshavebeenfacedwiththeproblemof... 　　2)Recentlytheproblemhasbeenbroughtintofocus. 　　3)Recentlythephenomenonhasbecomeaheatedtopic. 　　4)Recentlytheissuehasarousedgreatconcernamong... 　　5)Nowadaysthereisagrowingconcernover... 　　6)Neverinourhistoryhastheideathat...beensopopular.