◎ 题干
—Peter, how old is your father this year?
— _____. And we just had a party to celebrate his ______ birthday last weekend.
A.Fortieth; forty B.Forty; fortieth
C.Fourty; Fourtieth D.Fortieth; fortieth
◎ 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“—Peter, how old is your father this year?— _____. And we just had a party to celebrate his ______ birthday last weekend.A.Fortieth; fortyB.Forty; fortiethC.…”主要考查了你对  【基数词】【序数词】【时刻】【分数】  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。