题目内容

4．This tall building has    floors．And Tony lives on the      floor．（　　）
A．twelve；twelveB．twelfth；tewlfthC．twelfth；twelveD．twelve；twelfth

分析 这座高楼有十二层．托尼住在十二楼．

解答 答案：D．根据基数词表示数量以及floors是名词复数可知，第一个空应填基数词twelve；根据序数词表示顺序以及floor是名词单数可知，第二个空应用序数词twelfth．故选D．

点评 本题考查数词的用法，做题时注意基数词表示数量和序数词表示顺序的用法．

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