◎ 题干
    the students in this school is about four thousand,      of them are boys.
A.A number of, three fifthB.The number of, three fifths
C.A number of, three fifthsD.The number of, three fifth
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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 students in this school is about four thousand,of them are boys.A.A number of, three fifthB.The number of, three fifthsC.A number of, three fifthsD.The numbe…”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。