◎ 题干
No one but you knows your heart is racing, so take a breath and try to ________ down.
[     ]
A.concern  
B.set
C.upset  
D.calm
◎ 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“No one but you knows your heart is racing, so take a breath and try to ________ down.[]A.concernB.setC.upsetD.calm…”主要考查了你对  【动词】  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。