Question

【题目】This is ____ pen. It's _____ English pen.
A.a; an
B.a; a
C.an; an
D.an; a

Answer 1

【答案】A
【解析】元音音素开头的单词前加 an，辅音音素开头的单词前加a，表示数量“一"；pen是辅音音素开头，English是元音音素开头，故选A。