She is a girl．It means she is ． [ ] A． 16 years old; 16 years old B． 16-year-old; 16 years old C． 16 years old; 16-year-old D． 16-year-old; 16-year-old 题目和参考答案——青夏教育精英家教网—

题目内容

答案：B
解析：

16-year-old是个合成形容词，意为“16岁的”，放名词前作定语；而16 years old用作表语，不能作定语。

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