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求问,为什么不选d

GWD7-Q17:
Of patients over 65 yearsold who survived coronary bypass surgery—a procedure widely prescribed forpeople with heart disease—only 75 percent benefited from the surgery.  Thus it appears that for one in four suchpatients, the doctors who advised them to undergo this surgery, with itsattendant risks and expense, were more interested in an opportunity to practicetheir skills and in their fee than in helping the patient.
Which of the following,if true, most seriously undermines the argument?

A.     Many of the patients who receive coronary bypass surgeryare less than 55 years old.
B.      Possible benefits of coronary bypass surgery include bothrelief from troubling symptoms and prolongation of life.
C.     Most of the patients in the survey decided to undergocoronary bypass surgery because they were advised that the surgery would reducetheir risk of future heart attacks.
D.     The patients over 65 years old who did not benefit from thecoronary bypass surgery were as fully informed as those who did benefit fromthe surgery as to the risks of the surgery prior to undergoing it.
E.      The patients who underwent coronary bypass surgery but whodid not benefit from it were medically indistinguishable, prior to theirsurgery, from the patients who did benefit.
我在DE中徘徊
最后选了D,但是答案是E
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好强,终于明白了

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D项与doctor的intention无关:所有病人都知道risk,并不能说明doctor没有刻意欺骗部分病人,明知道他们不适合手术,却还是说服他们接受。

E项与doctor的intention有关:如果doctor在手术前并不知道4个病人中哪个会手术失败,即medically indistinguishable,所以会让4个病人都做手术,虽然只有三个人的可以成功。如此一来,医生在手术前没有欺骗病人的行为。

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D  是  无关的啊

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