!!一道逻辑题,求思路

sun_lizzy · 发表于 2010-11-28 16:46:42

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.

chong13 · 发表于 2010-11-28 17:54:35

帮LZ贴一个很详细的解释过来
没有证据表明贝多芬得过性病，但很多人认为是性病让他失聪的。
E：水银（用来吃？）在贝多芬那个年代被普遍用来治疗性病。
所以：头发里有水银--水银治性病--得过性病--性病让他失聪
B答案：一些贝多芬时代的人不摄入水银。取非的话就是那些人会摄入水银，也就说水银不只是用来治性病的，也有其他用途。这就是攻击了文中推断的第一步，即说即使贝多芬摄入过水银，但也不是用来治性病的。所以Assumption就是B

ViolaT4ever5 · 发表于 2010-11-28 18:41:53

觉得B不对诶...E也不对,文中没有比较...D错误的把水银当做导致耳聋的原因...我觉得是C,因为上文中说没有显示贝爷有V病,而他又耳聋,那么如果C成立的话就说明水银治好了贝爷的V,导致V没有证据,但是他V引发的耳聋依然存在...
求正解...

zyh730 · 发表于 2010-11-28 19:18:18

这题很纠结。。。M treat V & 可以找到M-----推出-----V导致deaf。
本来想选(C) Mercury is an effective treatment for venereal disease.因为这样可以加强M和V的联系。但并不代表有M肯定是用来treat V的。选项感觉都不太对。。。本人罗技极差。。。求高人指点~~~

heywendy · 发表于 2010-11-28 20:32:11

我觉得应该是D
C答案：水银是治疗性病的有效措施。如果水银有效的话，那么假设贝多芬服用过水银，性病就应该被治疗好，因此也就不会产生“性病导致耳聋”的推测。所以C是削弱
D答案：水银中毒会使患有性病的人耳聋。题目中说 Since mercury was commonly ingested in Beethoven’s time to treat venereal disease，如果贝多芬有性病——服用和水银——导致耳聋。

Avengeryzc · 发表于 2010-11-28 20:44:04

我是这样想的，水——性——聋子我们得到的是水，结论是性引起聋子问你的是ass 还有就是ass的answer是唯一性，不可能会有多种选择 d只是加强，取非不能weak这个东东所以选b

eshopaholic · 发表于 2010-11-28 20:47:11

B 吧

二楼说得很清楚啦。

venereal disease 不是每个人都有吧，注射水银治病；没病的人不需要注射水银。

取非，不管有病没病都注射水银，即使头发中检测出水银，也不能证明B得病了。

sun_lizzy · 发表于 2010-11-28 20:58:45

谢谢,已经明了

ViolaT4ever5 · 发表于 2010-11-28 21:02:12

反应过来了,B...假设题的要诀是取非,居然把这个忘了,该打...

seyouji · 发表于 2010-11-28 21:09:29

这是哪儿来的题，好八卦啊，gmac会出这种题吗，太不阳光了。

!!一道逻辑题,求思路

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