Question

【题目】Tom, a boy, likes writing songs.

A. thirteen-years-old B. thirteen years old C. thirteen-year-old

Answer 1

【答案】C

【解析】句意：汤姆，一个13岁的男孩，喜欢写歌。考查年龄表达法。英语中的年龄表达主要有两种：数词+years+old和数词-year-old；根据句意结构，可知选C。