14.(c) 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. (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,我还是不明白，我选了b.请大家解释解释。

Dr A 这个人用的是循环论证

A的逻辑：because the vaccine is worthless，the studies must have been faulty . 然后推出B的论述不对，即研究无法说明疫苗好，以说明A的论述正确（疫苗不好）

逻辑上 ：疫苗不好〉〉研究有问题〉〉研究无法说明疫苗好（疫苗不好）〉〉疫苗不好

C就是因果循环论证，你看看对不？

B是人身攻击，你觉得捏