◎ 题干
You’d better go there by train. The train ticket is _______the airplane ticket.
A.as cheap three times asB.as three times cheap as
C.three times cheaper thanD.cheaper three times than
◎ 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“You’d better go there by train. The train ticket is _______the airplane ticket. A.as cheap three times asB.as three times cheap asC.three times cheaper thanD.…”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。