标题: 向牛哥们请教 [打印本页] 作者: wuqian321 时间: 2011-6-10 13:07 标题: 向牛哥们请教 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.
我选的E，为什么正确答案是C呀？作者: moremildseven 时间: 2011-6-10 15:20
额 我是这样理解的 因为对不同的人群，缺少V的标准是不一样的 所以题目错误的使用了同一个term作者: masculine 时间: 2011-6-10 17:24 标题: 楼上 不同的人群，题目明明给出的是 the same group!作者: moremildseven 时间: 2011-6-10 18:50
所以这才是fail to employ丫 未能利用相同的参照组