Nowadays _______ of business letters ______ in English.
A two third, writes   B. two thirds, is written   C. two thirds, are written
C

試題分析:表達分數(shù)時當分子大于一時，表示分母的序數(shù)詞用復數(shù)形式。復數(shù)的三分之二還是復數(shù)，故謂語動詞用復數(shù)形式。
點評：表達分數(shù)時，當分子大于一時，表示分母的序數(shù)詞用復數(shù)形式；當分子是一時，分母不加s。
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