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        1. We all know that dinosaurs lived on the Earth more than ______ years ago.

          A.sixty million B.millions of C.sixty million of D.million of

          A

          解析試題分析:句意:我們都知道恐龍在地球上生存在6千萬年前。表示確切數(shù)字,million不用復數(shù);表示概數(shù),million必須用復數(shù),并且和介詞of連用,所以選A。
          考點:考查數(shù)詞。

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