求解prep08-77

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73.   Which of the following mostlogically completes the argument below?

Twenty percent of thestores in Morganville's downtown shopping district will fail within five yearsbecause they will be competing directly with the SaveMart discount departmentstore newly opened in East Morganville. The downtown shopping district has lost business at this rate before andhas always completely rebounded. Confidence that it will rebound again from the losses it is now about tosuffer is ill founded, however, because __________.

(A)  the stores likely to be put outof business by direct competition from SaveMart are the downtown shoppingdistrict's anchor stores, on whose ability to draw shoppers many of the otherdowntown stores depend

(B)  the bus line that has longconnected the downtown area of Morganville with East Morganville has atradition of carrying shoppers who reside in East Morganville into downtownMorganville to shop

(C)  when the downtown shoppingdistrict has rebounded before, the business premises of a failed business weretypically taken over by a business of the same kind as had been there before

(D)  SaveMart's business plan for the East Morganville store is based onearning low profits, if any, during the first five years of the store'sexistence

(E)  it is conceivable that thedowntown shopping district could shrink substantially without collapsingaltogether

答案选A，可以理解，提出了Savemart出现前和出现后的两种情况的不同之处

那为何不能选C, Savemart出现前，downtown shopping district这个地区失败的商业会由当地其他的商业（商业模式相同）替代; 但是Savemart出现后，因为downtown当地不会有别的商业代替，savemart也不在downtown shopping district， 所以该地区的经济无法恢复如前。这个C不也体现了前后的不同之处吗？