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1、考研英语真题阅读理解试题及名师解析(17)英语真题阅读理解试题及名师解析（17） Inrecentyears,railroadshavebeencombiningwitheachother,mergingintosupersystems,causingheightenedconcernsaboutmonopoly.Asrecentlyas1995,thetopfourrailroadsaccountedforunder70percentofthetotalton-milesmovedbyrails.Nextyear,afteraseriesofmergersiscompleted,jus
2、tfourrailroadswillcontrolwellover90percentofallthefreightmovedbymajorrailcarriers. Supportersofthenewsupersystemsarguethatthesemergerswillallowforsubstantialcostreductionsandbettercoordinatedservice.Anythreatofmonopoly,theyargue,isremovedbyfiercecompetitionfromtrucks.Butmanyshipperscomplainthatfo
3、rheavybulkcommoditiestravelinglongdistances,suchascoal,chemicals,andgrain,truckingistoocostlyandtherailroadsthereforehavethembythethroat. Thevastconsolidationwithintherailindustrymeansthatmostshippersareservedbyonlyonerailcompany.Railroadstypicallychargesuch“captive”shippers20to30percentmorethant
4、heydowhenanotherrailroadiscompetingforthebusiness.Shipperswhofeeltheyarebeingoverchargedhavetherighttoappealtothefederalgovernment'sSurfaceTransportationBoardforraterelief,buttheprocessisexpensive,timeconsuming,andwillworkonlyintrulyextremecases. Railroadsjustifyratediscriminationagainstcaptivesh
5、ippersonthegroundsthatinthelongrunitreduceseveryone'scost.Ifrailroadschargedallcustomersthesameaveragerate,theyargue,shipperswhohavetheoptionofswitchingtotrucksorotherformsoftransportationwoulddoso,leavingremainingcustomerstoshoulderthecostofkeepinguptheline.It'satheorytowhichmanyeconomistssubscri
6、be,butinpracticeitoftenleavesrailroadsinthepositionofdeterminingwhichcompanieswillflourishandwhichwillfail.“Dowereallywantrailroadstobethearbitersofwhowinsandwholosesinthemarketplace?”asksMartinBercovici,aWashingtonlawyerwhofrequentlyrepresentsshippers. Manycaptiveshippersalsoworrytheywillsoonbeh
7、itwitharoundofhugerateincreases.Therailroadindustryasawhole,despiteitsbrighteningfortunes,stilldoesnotearnenoughtocoverthecostofthecapitalitmustinvesttokeepupwithitssurgingtraffic.Yetrailroadscontinuetoborrowbill
