As we know no matter how a man is if he doesn’t learn he knows nothing.A. intelligent B

问题补充：

As we know, no matter how a man is, if he doesn’t learn, he knows nothing.

A. intelligent

B. enthusiastic

C. relaxed

D. disappointed

答案：

(答案→)A. intelligent

B. enthusiastic

C. relaxed

D. disappointed

解析：此处intelligent聪明的；enthusiastic热情的； relaxed放松的； disappointed失望的。句意：我们都知道，不管一个人有多么聪明，如果他不学习，他也什么都不知道。根据句意选A。