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Passage Three
Questions 33 to 35 are based on the passage you have just heard.

A．The Washington Federation of Teachers.
B．The National Labor Union.
C．The American Federation of Teachers.
D．The Washington Labor Union.

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单项选择题

单项选择题

Passage Three Questions 33 to 35 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。