—A ruler is 2 dollars and a pen is 3 dollars. How much are they? —They are _______

◎ 题干

—A ruler is 2 dollars and a pen is 3 dollars. How much are they?
—They are ________.

A．$2

B．$3

C．$4

D．$5

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◎ 解析

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◎ 知识点

根据魔方格专家分析，试题“—A ruler is 2 dollars and a pen is 3 dollars. How much are they? —They are ________. A．$2B．$3C．$4D．$5…”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。

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