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※ 引述《denizee3 (妮)》之銘言: : Often patients with ankle fractures that are stable, and thus do not require : surgery, are given follow-up x-ray because their orthopedists are concerned : about possibly having misjudged the stability of the fracture. : When a number of follow-up x-rays were reviewed, however, all the fractures 原文這裡說 a number of ... 被 reviewed,發現這些被複檢過的「通通都是」... (all the fractures ...), : that had initially been judged stable were found to have healed correctly. : Therefore, it is a waste of money to order follow-up x-rays of ankle fracture : initially judged stable. 所以,推論出 it is a ... judged stable. 而這推論中的 ankle fracture 是指 所有的狀況,不僅只是之前被複檢過的。 因此,這段推理犯了「歸納」錯誤。(以部分推全部,但這「部分」不一定具代表性。 : Which of the following, if true, most strengthens the argument? : A) Doctors who are general practitioners rather than orthopedists are less : likely than orthopedists to judge the stability of an ankle fracture : correctly. : B) Many ankle injuries for which an initial x-ray is ordered are revealed by : the x-ray not to involve any fracture of the ankle. : C) X-rays of patients of many different orthopedists working in several : hospitals were reviewed. 答案 C說,這些被 reviewed 的病例,來自不同醫院,不同醫生,也就是這些被 reviewed 的病例,並非偏頗取樣的結果。所以「具備代表性」,可以用來「歸納」 出全部病例也都會如此。 總結來說,答案C是歸納支持答案。 以上,供參考。 : D) The healing of ankle fractures that have been surgically repaired is : always checked by means of a follow-up x-ray. : E) Orthopedists routinely order follow-up x-rays for fractures of bone other : than ankle bones. : Answer: C : 我選B, 看了傷咖的文章可以了解B為什麼錯.. : 但是還是不能了解為什麼答案是C : 是否可以請大家幫我解釋一下! : 謝謝! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.23.25