（2012鸡西）A________girl named Dong Xinyi l...

（2012鸡西）A________girl named Dong Xinyi looked after her disabled father．

A．three-year-old

B．three-years-old

C．three years old

A 【解析】数词和名词合成的形容词，中间用连字符，名词用单数。故选A。

考点分析：

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