请教LSAT－2－IV－22

vivianQQ

22. All intelligent people are nearsighted. I am very nearsighted. So I must be a genius.

Which one of the following exhibits both of the logical flaws exhibited in the argument above?

(A) I must be stupid because all intelligent people are nearsighted and I have perfect eyesight.

(B) All chickens have beaks. This bird has a beak. So this bird must be a chicken.

(C) All pigs have four legs, but this spider has eight legs. So this spider must be twice as big as any pig.

(D) John is extremely happy, so he must be extremely tall because all tall people are happy.

(E) All geniuses are very nearsighted. I must be very nearsighted since I am a genius.

答案选 D,但我觉得B也对啊！都是 All A 有B属性，C 也有B属性，so C is A
请大家指教。

mindfree

This problem was discussed just a few days ago. Please check it out in previous post.

vivianQQ

找到了，谢谢！