求教各位NN逻辑大全testC-14

julia818

Dr. A: The new influenza vaccine is useless at best and possibly dangerous. I would never use it on a patient.

Dr. B: But three studies published in the Journal of Medical Associates have rated that vaccine as unusually effective.

Dr. A: The studies must have been faulty because the vaccine is worthless.

In which of the following is the reasoning most similar to that of Dr. A?

(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe.

(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk.

(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls.

(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good.（C）

(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT.

答案是C，但是我觉得是B。C是从正面来推断？觉得与DR A没特别相似的地方

clarry

似乎B中的milk与Jersey和题干中studies与vaccine的关系不对等。所以
B-是 攻击来源
C-才是 循环论证。

gaoliang641

这道题的体型比较罕见啊。 

Dr A的说法类似于the new vaccine is worthless because it is worthless。 他的原因和结果都是一样的。 

而C也差不多，说的是w tennis ball is best because  it is the best than any other tennis balls. 

这样的论证时有问题的。 

姑且算作解释之一吧。