【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(duì)于一個(gè)10歲的小男孩來(lái)說(shuō)，讀這些書(shū)3個(gè)小時(shí)就足夠了。時(shí)間，距離，金錢(qián)等作主語(yǔ)，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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