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[求助]LSAT-3-4-5

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楼主
发表于 2004-2-2 10:58:00 | 只看该作者

[求助]LSAT-3-4-5

LSAT-3-IV 第5题

Most parents who are generous are good parents, but some self-centered parents are also good parents. Yet all good parents share one characteristic: they are good listeners.
If all of the statements in the passage are true, which one of the following must also be true?
(A) All parents who are good listeners are good parents.
(B) Some parents who are good listeners are not good parent.
(C) Most parents who are good listeners are generous.
(D) Some parents who are good listeners are self-centered.
(E) Fewer self-centered parents than generous parents are good listeners
答案是d我也可以接受,但b好像也沒有錯啊?謝謝

沙发
发表于 2004-2-2 11:26:00 | 只看该作者
嗯,b是最容易错的,
原文的内容是推不出b的
因为原文没有说到如何情况才are not good parent
good listeners和 good parent这两个部分可能正好重合的嘛
而d是肯定对的
板凳
发表于 2004-2-2 22:00:00 | 只看该作者
注意 提问中的must即一定要是必要条件
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