feifei逻辑一道!~求解

Chrislvzh · 发表于 2011-4-7 20:24:33

Historian: We can learn about the medical history of individuals through chemical analysis of their hair. It is likely, for example, that Isaac Newton’s psychological problems were due to mercury poisoning; traces of mercury were found in his hair. Analysis is now being done on a lock of Beethoven’s hair. Although no convincing argument has shown that Beethoven ever had a venereal disease, some people hypothesize that venereal disease caused his deafness. Since mercury was commonly ingested in Beethoven’s time to treat venereal disease, if researchers find a trace of mercury in his hair, we can conclude that this hypothesis is correct.
Which one of the following is an assumption on which the historian’s argument depends?
(A) None of the mercury introduced into the body can be eliminated.
(B) Some people in Beethoven’s time did not ingest mercury.
(C) Mercury is an effective treatment for venereal disease.
(D) Mercury poisoning can cause deafness in people with venereal disease.
(E) Beethoven suffered from psychological problems of the same severity as Newton’s.

选b....why?

谢谢!

gaoshaniris · 发表于 2011-4-7 20:43:09

具体解释不会，但是可以这么想，assumption不是去反的话就会反驳文章么，B取反的话就是贝多芬时代的所有人都吃水银，（是不是水银不知道），就反驳了假设啊，暂且先给你一个解释吧，应该有更合适的解释~

Chrislvzh · 发表于 2011-4-7 20:51:46

选项中是some不适all...请问为什么可以理解为所有人吃水银...谢谢!

dengts · 发表于 2011-4-7 21:12:26

If you negate B,we have:ALL people in Beethoven's time ingest mercury.Perhaps at that time,mercury is just something like rice today.Do we ingest rice to treat venereal disease?Of course NOT!

dengts · 发表于 2011-4-7 21:16:15

Negate "ALL".We have "not all"."not all" almost means "Some".

红红的云 · 发表于 2011-4-8 03:12:54

通过头发的化学分析可以知道一个人的病史。例如从牛顿的mercury分析出他的psychological problems （因为mercury中毒导致psychological problem。

现在我们怀疑贝多芬耳聋是由性病导致的。只要我们确认他的头发里面有mercury ，这种怀疑就可以证实。因为当时性病要mercury 去医治。

以上的argument的假设：
假设了mercury 中毒可以导致贝多芬的耳聋。（如果mercury 中毒不能导致耳聋，historian的hypothesis性病导致了耳聋无法成立）

sdcar2010 · 发表于 2011-4-8 07:12:54

LSAT question. dengts' solution is right.

Chrislvzh · 发表于 2011-4-8 10:32:29

明白了...谢谢！

feifei逻辑一道!~求解

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