GMAT 考满分题库

Magoosh - 逻辑CR - 14
Riders who wear bicycle helmets can greatly reduce the risk of significant injury. Therefore, doctors working in an emergency room can expect that, out of cyclists admitted to hospitals, those wearing bicycle helmets will have injuries that are less severe than will those not wearing a helmet.

Which of the following is necessary to evaluate the argument?
  • AThe probability that those cyclists admitted to an emergency room have suffered similar accidents in the past 分析该选项
  • BThe durability of bicycle helmets over the course of many years 分析该选项
  • CThe number of riders wearing bicycle helmets compared to the number not wearing helmets 分析该选项
  • DWhether the bicycling activities of cyclists using a helmet differs from the activities of those not wearing a helmet 分析该选项
  • EThe number of medical staff who are in the emergency room when an injured cyclist arrives 分析该选项
正确答案: D

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