◎ 题干
Elvis Presley has sold more than one______ records all his life.
A.billion B.billion of C.billions of D.billions
◎ 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“Elvis Presley has sold more than one______ records all his life.A.billionB.billion ofC.billions ofD.billions…”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。