求助大家一道逻辑题，已绕晕。

nicolefeng12345

Often patients with ankle fractures that are stable, and thus do not require surgery, are given follow-up x-rays 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 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?

• ADoctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly.  分析A选项
• BMany ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle.  分析B选项
• CX-rays of patients of many different orthopedists working in several hospitals were reviewed.  分析C选项
• DThe healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray.  分析D选项
• EOrthopedists routinely order follow-up x-rays for fractures of bone other than ankle bones.  分析E选项
  

叫我西瓜

顶楼上，注意到题目里When a number of follow-up x-rays were reviewed 是考样本容量的问题 容量太小则不具有代表性

mnimi

nicolefeng12345 发表于 2015-12-24 17:20
我知道其它选项都有问题，但是C选项were reviewed的意思是，报告已经被几家医院的几个医生看过了吗，觉得 ...

C的意思是说样本很大，很多医院的很多整形外科医生的X光片都包括在内了，所以结论很可信。

lvlv10

nicolefeng12345 发表于 2015-12-24 17:20
我知道其它选项都有问题，但是C选项were reviewed的意思是，报告已经被几家医院的几个医生看过了吗，觉得 ...

我还以为你别的选项有问题  我也觉得C怪怪的 帮不了你了  还是等大神讲解吧
我和你理解的差不多  报告已经被看过了  再做x光就是浪费钱  
但是因为别的选项能排除  我也没纠结于C

nicolefeng12345

lvlv10 发表于 2015-12-24 14:46
lz你是哪儿不懂啊

我知道其它选项都有问题，但是C选项were reviewed的意思是，报告已经被几家医院的几个医生看过了吗，觉得这个过去时用的很怪，C要表达什么意思呢

lvlv10

lz你是哪儿不懂啊