We all know that dinosaurs lived on the Earth more than ______ years ago.A.sixty
题型:不详难度:来源:
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 |
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答案
A |
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。 |
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