fei fei 63 still don't understand pls help

prllrpnt

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. 

A.        原文的第一句，从原文推出。

B.         从结论可以推出。

C.         推不出这种比较，无关。

D.        正确。结论：但是即使并非所有的好厨师是big eaters，他们却全都喜欢准备和供应食物。说明喜欢准备和供应食物的好厨师的人数更多，是big eaters的好厨师的人数相比较少。D选项与原文的结论相反。

E.         从原文推出。

zenger

But even though not all good cooks are big eaters，

也就是说有可能all good cooks are big eater。此时E CAN be true。

而D还是 CANNOT be true.：There are fewer good cooks who enjoy serving and preparing food than there are good cooks who are big eaters。

你对D的理解有问题。

D说：enjoy s&p的good cooks比big eaters的good cooks少。那么，如果两者一样多，D就错了。

当然，本题不可能是GMAT的难度。

transpot

用集合判定

最大的集合是the poeple who enjoy preparing and serving food.

里面有个集合就是好厨师。

好厨师里面包括了big eaters，goumet cook等等几个集合，他们中间会有相互交叉，但都在好厨师这个大集合里。

三层集合这么一比较。

这样你就知道哪个选项肯定错误了。

[此贴子已经被作者于2005-9-6 17:24:52编辑过]