◎ 题干
All those second-hand goods are sold at                  before.
A.30%as lower price asB.30%as low a price as
C.as 30%low price asD.30%lower price than
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“All those second-hand goods are sold atbefore.A.30%as lower price asB.30%as low a price asC.as 30%low price asD.30%lower price than…”主要考查了你对  【序数词】【小数】【分数】【量词】  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。