◎ 题干
No one knows when such a custom first _____.
[     ]
A. came into power
B. came into being
C. came true
D. came out
◎ 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“No one knows when such a custom first _____.[ ]A. came into powerB. came into being C. came true D. came out …”主要考查了你对  【动词短语】  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。