单选题：What happened to Mir in 1997?

题目分类：理工类
题目类型：单选题
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题目内容：

What happened to Mir in 1997? A．it ran out its fund.
B．it was completely damaged by f'tre.
C．its reputation was ruined due to power failures.
D．its main computer system broke out.

参考答案：

答案解析：

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