费费63 探讨

girlwithwings · 发表于 2009-12-22 06:47:16

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.
答案D

我认为B也值得商讨
good cooker 可以推出enjoy

但enjoy 一定是good cooker吗？

他们两个互为充分必要条件？

sprtng · 发表于 2009-12-22 07:24:45

问题问的是CANNOT be true. 意思就是没有商量余地的。。。

B 说everyone who enjoys preparing and serving food is a good cook. we dont know this, but we know all good cooks likes doing it, so there is a possibility. 有可能对，也有可能错，但是并不是没有商量余地的完全否定。
D是完全否定的。因为说并不是所有的好厨师都喜欢吃，但是所有的好厨师都喜欢prepare and serve food，所以喜欢prepare and serve food的好厨师肯定比喜欢吃的多～

herosweet · 发表于 2009-12-22 07:24:48

我是小菜鸟的解释，不知道可不可以讲清楚。

我认为good cook就相当于这个题的大集合，所有的子集合（such as big eaters）都被包含在内。因为原文说了，enjoy prepare food=all good cooks，所以这个子集（cooks who are enjoy prepare food）是包括所有的good cooks的。所以，应该互为充分必要

girlwithwings · 发表于 2009-12-22 08:11:48

我感觉这里B写的everyone 挺迷惑的。

如果Enjoy 是全集，Good Cook是子集的话，
正如原文说说， Good Cook 都是Enjoy的
但如果存在其他子集的话，Enjoy就不能推出是Good Cook了。
（例，某人不是厨师，但Enjoy,那他不算是Good Cook吧）

除非如楼上解释，Good Cook 是全集，还有Everyone 指代厨师还是所有个体？

费费63 探讨

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