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        1. In our class, about        of the students are girls.
          A.three fifth          B.third fifths         C.three fifths
          C

          本題考查分?jǐn)?shù)的用法,分子我們用基數(shù)詞,分母我們用序數(shù)詞。當(dāng)分子大于1時,其序數(shù)詞后要加s,故選C
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