单选题：What is the author's purpose in writing this passage?

题目分类：初级
题目类型：单选题
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题目内容：

What is the author's purpose in writing this passage? A．To urge the middle class to wake up and protect their own interests.
B．To warn the government of the shrinking of the American middle class.
C．To persuade the government to change its current economic policies.

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答案解析：

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分类：初级题型：单选题

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分类：初级题型：单选题

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分类：初级题型：单选题