费费逻辑宝典 63

63. Some good cooks are gourmet cooks who pride themselves on always using extravagantly rich ingredients in elaborate recipes. Some good cooks can be characterized as fast-food cooks. They may use rich ingredients as long as the recipes are easy to follow and take little time. Other good cooks are health food enthusiasts, who are concerned primarily with the nutritional value of food. But even though not all good cooks are big eaters, they all enjoy preparing and serving food.

If the information in the passage is true, which one of the following CANNOT be true?

(A) Most good cooks do not use extravagantly rich ingredients.

(B) Everyone who enjoys preparing and serving food is a good cook.

(C) More good cooks who use extravagantly rich ingredients are big eaters than are good cooks who do not use such ingredients.

(D) There are fewer good cooks who enjoy serving and preparing food than there are good cooks who are big eaters.

(E) Gourmet cooks, fast-food cooks, and cooks who are health food enthusiasts are all big eaters.

d是答案.  e为什么不对? 题干说不是所有的好厨师都是big eater啊

?? 没看懂mindfree的回答

我的问题是: 题干最后一句说"虽然不是所有的好厨师都是big eaters, 但他们都喜欢serve食物"

然后问题是问如果题干正确,下面哪项不可能是真的,所以我觉得e说"所有的好厨师都是big eater"不对, 所以也可以作为答案啊

这个题，我想你应该这样理解：题目中并没有说good cooker就是分成了三类，可能还有其他的good cooker，所以，也就是存在这种情况，就是三类的good cooker 刚好是big eater。这是一种特殊的情况，就是集合刚好重合，你仔细想一下，试试，其实前面ABC中也是有这种情况的。

但D的比较关系是一定不对的，good cooker的人是既定的，但只有一部分是big eater，但全部是 enjoy preparing and serving food，所以，前者比后者肯定少。