题库> 逻辑 CR> CR-11lsbj

题目选项分析

Colorless diamonds can command high prices as gemstones. A type of less valuable diamonds can be treated to remove all color. Only sophisticated tests can distinguish such treated diamonds from naturally colorless ones. However, only 2 percent of diamonds mined are of the colored type that can be successfully treated, and many of those are of insufficient quality to make the treatment worthwhile. Surely, therefore, the vast majority of colorless diamonds sold by jewelers are naturally colorless.

A serious flaw in the reasoning of the argument is that

【选项】the difficulty that a customer of a jeweler would have in distinguishing a naturally colorless diamond from a treated one is not taken into account

选项是否正确?

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题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:OG19-语文分册-164
  • 题目来源2:OG20-语文分册-175
正确率:65% 中等