Section B

　　52--56 CDCBA

　　52.因果推斷題。第二段開篇就描述了鐵路合并支持者們認為合并有助于減少成本以及更好地合作服務(wù)，不用擔心壟斷，因為還有來自卡車等運輸方式的強烈競爭，即“...these mergers will allow for substantial cost reductions and better coordinated service.Any threat of monopoly，they argue，is removed by fierce competition from trucks。因此。正確答案為C項。

　　53.態(tài)度揣摩題。關(guān)于captive shipper文中提及很多次，多次表達了他們對鐵路合并的態(tài)度，如“i)many shippers complain that for heavy bulk commodities traveling long distances， trucking is too costly;ii)Shippers who feel that they are being overcharged...iii)Many captive shippers also worry they will soon be hit with a round of huge rate increases;iv)Many captive shippers fear that they will，as Norfolk Southern and CSX increase their grip on the market.”，總體而言，captive shippers是不滿、抱怨、擔憂和擔心的態(tài)度，因此正確答案為D項。

　　54.推斷題。由第三段“，..consolidation...means that most shippers are served by only one rail company...Shippers who feel that they are being overcharged have the right to appeal to the federal government...but the process is expensive，time consuming...”可見合并將會導(dǎo)致絕大部分shippers由一家rail company壟斷(但不是所有的)，挨宰的人有權(quán)申訴但這一過程會耗費大量時間和金錢，所以他們一般不會訴諸法律，因此正確答案為C項。

　　55.詞義推斷題。由“arbiters”所在句Do we really want railroads to be the arbiters of who wins and who loses in the marketplace.可以猜測出arbiters的意思，因為他/她可以決定誰贏誰輸，懂體育的人就很容易猜出大概是“裁判”的意思。

　　56.因果推斷題。文章最后一段提到shippers擔心會有新一輪rate增加，因為鐵路運輸盡管賺錢，但還不足以挽回所有合并成本以及投資成本來滿足運輸需求的大幅度增長。他們?nèi)栽诓粩嘟桢X去合并，業(yè)務(wù)收入是運營成本的一半不到。這中間的赤字誰來買單呢? shippers。是什么原因?qū)е聄ate增加呢?追根究底，還是合并惹的禍，故正確答案為A項。