◎ 题干
Dinosaurs were huge animals. They lived ___________ years ago.
[     ]
A. hundreds of
B. thousands of
C. millions of
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Dinosaurs were huge animals. They lived ___________ years ago.[ ]A. hundreds ofB. thousands of C. millions of …”主要考查了你对  【基数词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。