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Nowadays, ___________of business letters are written in English.
A. two third        B. two thirds      C. two three
B

試題分析：句意為：現(xiàn)在，2/3的商業(yè)信件都用英語(yǔ)來(lái)寫。分?jǐn)?shù)的表達(dá)：分子用基數(shù)詞，分母用序數(shù)詞，當(dāng)分子大于1時(shí)，分母要加“s”。故選B。
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