21. 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.
如果把B选项直接取非，就是all of people in that time ingest mercury. 这就形成了削弱的效果，全世界都在吃水银，那就无法体现出B吃水银是用来治病的了= = 正是因为somepeople吃，some不吃，才推出贝多芬是在为了治病。 其实我觉得这道题逻辑不是很严密~ 打个比方 萝卜能防眼病+我在吃萝卜 能推出我眼睛不好吗？~~不能~~
如果把B选项直接取非，就是all of people in that time ingest mercury. 这就形成了削弱的效果，全世界都在吃水银，那就无法体现出B吃水银是用来治病的了= = 正是因为somepeople吃，some不吃，才推出贝多芬是在为了治病。 其实我觉得这道题逻辑不是很严密~ 打个比方 萝卜能防眼病+我在吃萝卜 能推出我眼睛不好吗？~~不能~~
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发表于 2010-7-12 12:21:47
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