—It sounds to me as if he knows a lot about computers.—He is a person who is fond of.A. sh

问题补充：

—It sounds to me as if he knows a lot about computers.

—He is a person who is fond of.

A. showing up

B. making up

C. showing off

D. making out

答案：

A. showing up

B. making up

(答案→)C. showing off

D. making out

解析：考查动词短语辨析。A出现，露面；B化妆，编造，弥补，组成；C炫耀；D辨认出，理解；句意：—听起来似乎他很了解计算机。—他是一个很喜欢炫耀的人。根据句意说明C正确。