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(4). (单选题) According to the passage, why are Americans likely to change their friends several times over the years?(本题0.0分)
A、 Because this is their nature.
B、 Because they don’t have best friends all through their lives.
C、 Because American friendship depends on frequent interaction with the other person.
D、 Because American friendship is to fade and die.

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出自：河北建筑工程学院-大学英语1（高起专）

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