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标题: 问逻辑题LSAT-1-1-19 [打印本页]

作者: kokomi 时间: 2004-2-10 16:50
标题: 问逻辑题LSAT-1-1-19
some good cooks are gourmet cooks (...),some good cooks can be characterized as fast-food cooks (...),other good cooks are health food enthusiasts(...). But even though not all good cooks are big eaters, they all enjoy preparing and serving food.

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

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.

我想问一下E为什么不对.
谢谢

作者: 番茄炒蛋 时间: 2004-2-11 08:40
啊，这怎么会对呢
some good cooks are gourmet cooks
not all good cooks are big eaters
e中是 Gourmet cooks, are all big eaters
这里有明显的错误
你再看看

作者: kokomi 时间: 2004-2-12 10:13
对不起,我问一下
我觉得她说good cooks包括gourmet cooks fast-food cooks和health food cooks
然后not all good cooks are big eaters就是说
"not all g&f&h cooks are big eaters"
E选项说 g&f&h cooks are all big eaters 就不会对了
我可能哪儿个地方没有理解好,没转过弯来,请不吝执教.
bow

作者: 番茄炒蛋 时间: 2004-2-12 12:40
嗯？那你不是知道了e是错的吗，你得理解好像没有什么问题啊
看到这种绝对的形容词，如all each 还有every之类的就得当心，实在来不及，这种选项就不要再看了，大多是错得吧

作者: amo 时间: 2004-2-13 21:27
我可能已经明白你为什么有点不懂了

Gourmet cooks, fast-food cooks, and cooks who are health food enthusiasts 都是cooks但未必是good cooks，文中结论只说道good cooks，所以E中的cooks有点范畴扩大了

作者: kokomi 时间: 2004-2-14 00:32
这道题的答案是D.就是题目认为E是can be true的

我选的是E,因为我推下来E can not be true

是不是说some good cooks..some good cooks..other good cooks加起来不能代表所有的good cooks?

我还是觉得我对题可能没有理解好

[此贴子已经被作者于2004-2-14 0:33:31编辑过]

作者: richard-ma 时间: 2005-6-24 19:21

我刚开始的时候也觉得E是答案，主要思路是这样的：

cooks包含good cooks，good cooks是个子集。既然说not all good cooks are big eaters，就是说cooks里的一个子集not big eaters，那当然cooks不全都是big eaters了。

但是，再仔细想，发现Gourmet cooks, fast-food cooks, and cooks who are health food enthusiasts也只是cooks的一个子集，所以，good cooks这个子集不会影响这个子集。

so E可能对也可能错。

终于明白了。。。。。

作者: snowjing 时间: 2005-10-7 08:30

这题好像B也应该是错的吧?!

(B) Everyonewho enjoys preparing and serving food is a good cook

CANNOT be true的解题思路有何不同之处?

作者: snowjing 时间: 2005-10-10 00:27

CANNOT be true要求正确选项与原文所给信息矛盾. 有可能对有可能错的选项不是正确选项.

可见Feifei63.

作者: rockmax 时间: 2008-5-12 12:41

E是分类错误,, Gourmet cooks, fast-food cooks, and cooks who are health food enthusiasts 不等于all good cooks

但是B不知道, 我认为是错的. all good cooks enjoy preparing and serving food. 推不出Everyone who enjoys preparing and serving food is a good cook.

????

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