【題目】It’s said that ___ ___ of the water around the world is polluted.

A. two threes B. two thirds C. second three D. second thirds

【答案】B

【解析】

試題分析:句意:據(jù)說世界上三分之二的水被污染了。分?jǐn)?shù)的分子寫在前面,用基數(shù)詞;分母寫在后面,用序數(shù)詞。當(dāng)分子是1時(shí),分母用單數(shù);當(dāng)分子大于1時(shí),分母的序數(shù)詞用復(fù)數(shù)。故選B。

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