【題目】My sister is ____ years old，tomorrow（明天）is her ____ birthday．

A．twelve：twelfth B．twelve：twelve

C．twelfth；twelve D．twelfth；twelfth

【答案】A

【解析】

試題分析：句意：我的姐姐今年12歲了，明天是她12歲的生日。twelve 十二，數(shù)詞；twelfth 第十二，序數(shù)詞。表示某人的年齡時，用基數(shù)詞+years old；表示多少歲生日時，用序數(shù)詞。故選A。

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