GMAT逻辑题练习及答案(445)

　　GMAT逻辑题目:

　　Historian: We can learn about the medicalhistory of individuals through chemical analysis of their hair. It is likely,for example, that Isaac Newton’s psychological problems were due to mercurypoisoning; traces of mercury were found in his hair. Analysis is now being doneon a lock of Beethoven’s hair. Although no convincing argument has shown thatBeethoven ever had a venereal disease, some people hypothesize that venerealdisease 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 thishypothesis is correct.

　　Which one of the following is an assumptionon which the historian’s argument depends?

　　A. Noneof the mercury introduced into the body can be eliminated.

　　B. Somepeople in Beethoven’s time did not ingest mercury.

　　C. Mercuryis an effective treatment for venereal disease.

　　D. Mercurypoisoning can cause deafness in people with venereal disease.

　　E. Beethovensuffered from psychological problems of the same severity as Newton’s.

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