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?jiān)诘厍蛏仙嬖?/span>6千萬年前。表示確切數(shù)字，million不用復(fù)數(shù)；表示概數(shù)，million必須用復(fù)數(shù)，并且和介詞of連用，所以選A。

考點(diǎn)：考查數(shù)詞。

 

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