[CR. ] OV 45

看板GMAT (GMAT入學考試)作者student7 (student)時間15年前 (2011/06/15 16:58)推噓0(0推 0噓 0→)

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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 number of follow-up x-rays were reviewed, however, 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. 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. 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 Ｂ和Ｃ很糾結啊.... B是因為與主題無關嗎？(not to involve any fracture) C的句意是什麼啊？翻起來很怪.... -- 剛剛又再想了一下Ｃ是不是--確認樣本的可信度（因為題目是根據 A NUMBER OF gollow-up x-rays 來生得結論的） C 好像是說被reviewed的x-rays是來自許多不同的醫院和不同的骨科醫師這樣算不是算是說明了這個是平均採樣的大樣本確立了“統計數據生結論”的可信度是嗎？？Ｂ是說：許多腳踝的受傷經過Ｘ光照後，發現都沒什麼骨折。本來我是想說，因為腳踝受傷都沒什麼骨折，更確定了Ｘ光是不必要的。不過，像這種答案，似乎根本就偏離主題了？？因為，主題是在說“有骨折”.... 是嗎？？ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 118.168.188.66 ※ 編輯: student7 來自: 118.168.188.66 (06/15 17:15)