【題目】About ________ of the students have already gone to the mountain village.

A.second fifthB.two fifthsC.two fifthD.second five

【答案】B

【解析】

句意:大約五分之二的學(xué)生已經(jīng)去山村去了。

考查分?jǐn)?shù)表達(dá)法。分?jǐn)?shù)的表達(dá)方法:分子用基數(shù)詞,分母用序數(shù)詞,two是基數(shù)詞,second是序數(shù)詞,故排除AD項;當(dāng)分子大于1的時候,分母要用復(fù)數(shù),five是基數(shù)詞,fifth是序數(shù)詞,所以分母用fifth,當(dāng)分子大于1時,分母要用復(fù)數(shù)形式fifths,故排除C項。故選B。

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