题库> 逻辑 CR> CR-60hv1k

题目选项分析

The number of United States citizens suffering from the flu increased significantly this year over last year. Since this increase did not occur among citizens of other countries, it is likely the result of a particular flu virus confined to the United States.

Which of the following, if true, would cast the most serious doubt on the explanation for the increase given above?

【选项】Many non-US citizens took flu vaccines this year.

选项是否正确?

答对用户笔记

vtane
0人
vtane 2021-07-25 21:32:40
本文逻辑链:其他国家并没有像美国一样出现感染人数增加→流感只在美国发生
削弱方向:流感也可能出现在别的国家
打了疫苗不能证明流感是否在别的国家流行,而曾经在那些国家待过的人患了流感可作为事实证明,削弱原文
linda199606
0人
linda199606 2019-10-09 02:05:28
其实是无关,因为文章的结论是“particular flu virus confined to the United States” 重点在于美国(土地上的区域)有flu,但是这个选项和土地领域上无关

题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:Manhattan-28
难度:中等
Get Microsoft Silverlight
Get Microsoft Silverlight