Question

Wang Gang wants to be ________ swimmer but Simon wants to be ________ engineer.

A．a, a

B．a, an

C．an, a

D．an, an

Answer 1

B

表示事物的类别前，可数名词单数前通常加不定冠词，元音音素的在单词前加an，辅音音素前加a，swimmer第一个音是辅音，用a，engineer第一个音是元音，用an，故本题选B。