题目内容
—Where do you live, Jack?
—I live on the _____ floor. My room is No._______.
| A．nine, Ninth, | B．ninth, Ninth |
| C．nine, Nine | D．Ninth, nine |
B
解析试题分析：句意：捷克，你住在哪？我住在九楼上，我的房间是九号房间。序数词用来表示顺序，基数词也可以表示顺序。只需将基数词放在它所修饰的名词之后即可，不需要添加定冠词。结合句意，故选B
考点：考查数词的用法。
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