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8.About_______ of workers in that steel factory are young people.(  )
A.third-fifthsB.three-fifthsC.three-fivesD.three-fifth

分析 那家钢铁厂的五分之三的工人都是年轻人.

解答 答案:B.
本句考查分数的表达.对于分数的使用要注意,分子用基数词,分母用序数词,当分子大于一时,分母中的序数词用复数形式;故选B.

点评 对于分数的用法要识记一些常用短语,结合句意做出更明确的判断.

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