Question

【题目】We have ________ geography lesson in the afternoon. I think it's ________ useful subject.
A.a; a
B.an; a
C.an; an
D.a; an

Answer 1

【答案】A
【解析】题干翻译为我们在中午有一节地理课，我认为它是一门有用的学科。表示一节地理课用a geography lesson, useful第一个音是“j",为辅音，所以用a。故选A。