◎ 题干
Put the ___ of your tongue against your upper teeth when you produce the sound.
A.tip B.top C.peak D.pole
◎ 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“Put the ___ of your tongue against your upper teeth when you produce the sound.A.tip B.top C.peak D.pole…”主要考查了你对  【可数名词及其单复数】【集合名词】【名词】  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。