◎ 题干
There are ______ floors in the building, and Susan lives on ______ floor.

[     ]

A. fifteen; twelve
B. fifteenth; twelfth
C. fifteen; the twelfth
D. the fifteenth; the twelfth
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“There are ______ floors in the building, and Susan lives on _______ floor. [ ]A. fifteen; twelve B. fifteenth; twelfth C. fifteen; the twelfth D. the fif…”主要考查了你对  【基数词】【序数词】  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。