He is so young and short a man that I think he is but a professor of Northwest University

问题补充：

He is so young and short a man that I think he is but a professor of Northwest University.

A. anything

B. something

C. everything

D. nothing

答案：

(答案→)A. anything

B. something

C. everything

D. nothing

解析：A 考察代词。句意：他如此年轻而且这么矮，我觉得他绝对不可能是西北大学的教授。由句意可知anything ,因为anything but表示绝不。