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 题目和参考答案——青夏教育精英家教网—

题目内容

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

【解析】

试题分析：句意：我们都知道恐龙在地球上生存在6千万年前。表示确切数字，million不用复数；表示概数，million必须用复数，并且和介词of连用，所以选A。

考点：考查数词。

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