CXD逻辑12,N哥请进!

gedn01

Many pregnant women suffer from vitamin deficiency,but this is frequently not due to vitamin deficiency in their diets;most often it is because they have higher requirements for vitamins than do the rest of the population.
The best criticism of the reasoning in the statement above is that it______
a) fails to specify the percentage of pregnant women who suffer from vitamin deficiency.
b) gives insufficient information about why pregnant women have higher vitamin requirements than do other groups.
c) fails to employ the same reference group for both uses of the term "vitamin deficiency".
d) provides insufficient information about the incidence of vitamin deficiency in other groups with high vitamin requirements.
e) uses "higher requirements" in an ambiguous manner.
我选e,因为higher requirements没有指明是更高的维生素量，还是更多的维生素种类.

liverpool123

选C吧？

amberdeng

书上的答案是C，但我的第一反应也是选E。
不得其解，望高人点拨。

选C吧？

-- by 会员 liverpool123 (2010/2/15 22:22:25)

gedn01

高人在哪里