【題目】 Three hours _________ enough for a _______ boy to read books .

A. is , ten-year-old B. are ten-year-old

C. is ten-years-old D. are , ten-years -old

【答案】A

【解析】

試題分析：句意：對于一個10歲的小男孩來說，讀這些書3個小時就足夠了。時間，距離，金錢等作主語，視作單數(shù)，排除B,D；在由“數(shù)詞+名詞+形容詞”構(gòu)成的符合形容詞中，名詞應(yīng)該用單數(shù)形式。故答案為A。

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