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答案：
D
X>0
Ⅰ：部分正确（比如x>1时，不满足；这个只满足：X为0-1之间的时候）
Ⅱ：部分正确（比如x>1时，不满足；这个只满足：X为0-1之间的时候）
Ⅲ：不成立（如果x在0-1之间，比如0.5，不成立；如果>1,还是不成立，比如2）
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