B、即使该调查结果能够反映现在以及今后，那也是全国的，并不一定适用于SC地区。正如作者所说的，SC的居民收入增长高并不意味着SC的居民愿意购买高价房。

　　C、即使SC的居民愿意购买，该公司也未必能够盈利。经济学常识，利润等于营业额减去成本。建造高价房可能要比低价房高很多的成本，如果该成本多于销售收入的增长，则不会产生盈利，甚至会初选亏损。

　　23.A recent sales study indicated that consumption of seafood dishes in Bay City restaurants has increased by 30 percent over the past five years. Yet there are no currently operating city restaurants that specialize in seafood. Moreover, the majority of families in Bay City are two-income families, and a nationwide study has shown that such families eat significantly fewer home-cooked meals than they did a decade ago but at the same time express more concern about eating healthily. Therefore, a new Bay City restaurant specializing in seafood will be quite popular and profitable.

　　A、如果基数比较小，增长30%没有意义。即使有意义也是在过去的5年，并不表示今后也会如此。即使今后也是如此，人们也未必喜欢到海鲜专店去吃海鲜。人们可能觉得在那些饭馆偶尔搭配海鲜会更有味道，而不是就是喜欢吃海鲜。B城现在没有海鲜专店可能从侧面反映了这个问题。

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