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Most water companies in the United States add fluoride to tap water to help prevent cavities. Some dentists argue, however, that this practice actually causes more harm than good because people overestimate the protection afforded by the fluoride and do not take the proper steps to care for their teeth, such as brushing and flossing after every meal. If water companies did not add fluoride, the dentists claim, people would be forced to be more active in their dental hygiene and tooth decay would decline as a result.

Which of the following, if true, most weakens the dentists' claims?

【选项】Fluoride is widely used in commercially available dental care products.

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题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:Manhattan-48
正确率:79%