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题目选项分析

Though sucking zinc lozenges has been promoted as a treatment for the common cold, research has revealed no consistent effect. Recently, however, a zinc gel applied nasally has been shown to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater effectiveness of the gel must be due to the fact that cold viruses tend to concentrate in the nose, not the mouth.

In order to evaluate the argument, it would be most helpful to determine which of the following?

【选项】Whether either the zinc gel or the lozenges contain ingredients that have an impact on the activity of the zinc

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:GWD-207
正确率:51% 中等