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The ancient Nubians inhabited an area in which typhus occurs, yet surprisingly few of their skeletons show the usual evidence of this disease. The skeletons do show deposits of tetracycline, an antibiotic produced by a bacterium common in Nubian soil. This bacterium can flourish on the dried grain used for making two staples of the Nubian diet, beer and bread. Thus, tetracycline in their food probably explains the low incidence of typhus among ancient Nubians.

Which of the following is an assumption on which the argument relies?

【选项】Bread and beer were the only items in the diet of the ancient Nubians which could have contained tetracycline

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题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:GWD-168
正确率:68% 中等