With regard to its size, the U.S.A.is the( )country in the world.

With regard to its size, the U.S.A.is the( )country in the world.

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Who was the first great American poet to use free verse?

Who was the first great American poet to use free verse?

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机关、团体、企业事业单位和其他组织必须按照国家规定,向档案馆( )移交档案。

机关、团体、企业事业单位和其他组织必须按照国家规定,向档案馆( )移交档案。

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