【題目】About ________ of the workers in the factory were born in the ________.

A.two fifths; 1980B.two fifths; 1980s

C.second five; 1980sD.two-fifth; 1980s

【答案】B

【解析】

句意:工廠里大約五分之二的工人都出生在20世紀80年代。

考查數(shù)詞用法。表示分數(shù)時,分子用基數(shù)詞,分母用序數(shù)詞,分子大于1時,分母必須用序數(shù)詞的復數(shù)形式,排除CD;表達“……世紀……年代”時,在表達年份的阿拉伯數(shù)字后加s,即1980s。故選B。

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