如何看是单数还是复数？

puqiandi · 发表于 2010-5-31 08:51:44

1.In the textbook publishing business, the second quarter is historically weak, because revenues are low and marketing expenses are high as companies prepare for the coming school year.
(A) low and marketing expenses are high as companies prepare
(B) low and their marketing expenses are high as they prepare
(C) low with higher marketing expenses in preparation
(D) low, while marketing expenses are higher to prepare
(E) low, while their marketing expenses are higher in preparation
答案A，但是B选项错在their用复数，请问如何看出是单数，难道the textbook publishing business 是单数？

10gmat · 发表于 2010-5-31 09:14:08

revenue和expense的主语都是指textbook publishing business，所以这里应该用单数

如何看是单数还是复数？

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