题目信息
Fish currently costs about the same at seafood stores throughout Eastville and its surrounding suburbs. Seafood stores buy fish from the same wholesalers and at the same prices, and other business expenses have also been about the same. But new tax breaks will substantially lower the cost of doing business within the city. Therefore, in the future, profit margins will be higher at seafood stores within the city than at suburban seafood stores.
For the purposes of evaluating the argument, it would be most useful to know whether
A:More fish wholesalers are located within the city than in the surrounding suburbs
B:Any people who currently own seafood stores in the suburbs surrounding Eastville will relocate their businesses nearer to the city
C:The wholesale price of fish is likely to fall in the future
D:Fish has always cost about the same at seafood stores throughout Eastville and its surrounding suburbs
E:Seafood stores within the city will in the future set prices that are lower than those at suburban seafood stores
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正确答案：
E:Seafood stores within the city will in the future set prices that are lower than those at suburban seafood stores
题中说鱼的批发价一样，其他成本一样，但是新的税收减免政策使在city中的store税赋降低，结论是在city中的商户利润空间会变大。显然但有成本费用是不可能推算出利润的，必须要知道的是在city和suburb售价是否相同，因此选E。 D选项很有干扰性，它说的是之前在city和suburb售价是否相同，纵向比较属于无关，因为只关心政策之后利润是否增多，如果D用将来时，说之后的事情，那么就是对的
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