He is outstanding student from university in America. A. a; aB. a; anC. an; aD. an; an

问题补充：

He is outstanding student from university in America.

A. a; a

B. a; an

C. an; a

D. an; an

答案：

A. a; a

B. a; an

(答案→)C. an; a

D. an; an

解析：考查不定冠词. Outstanding的词首音素是元音,故不定冠词用an,university的词首音素是辅音,故不定冠词用a,选C.