【題目】In the factory, there are 100 workers. About _____ of workers are girls. So forty workers are boys.
A.three fifth
B.three fifths
C.three tenth

【答案】B
【解析】表示分?jǐn)?shù)時(shí),分子用基數(shù)詞,分母用序數(shù)詞,分子超過(guò)1,分母用復(fù)數(shù)形式,故表示五分之三用three fifths。選B。

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