◎ 题干
The man became a famous writer when he was ________.
A.in his fifty

B.in his fifties

C.in fifty years old D.in fifties
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The man became a famous writer when he was ________.A.in his fiftyB.in his fiftiesC.in fifty years oldD.in fifties…”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。