Question

【题目】(2013贵州安顺)Kate is ________ girl．She’s very happy at school，

A. a eighteen-year-old

B. an eighteen-year-old

C. an eighteen-years-old

D. a eighteen-years-old

Answer 1

【答案】B

【解析】考查冠词和复合形容词的用法。在元音音素开头的单词前面用冠词an，在辅音音素开头的单词前面用冠词a；复合形容词中的数词、名词和形容词用连字符连接，名词用单数。所以选择B。