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【简答题】
某个实验把一批嗜酒者作为实验对象。实验对象分为两组：第一组是实验组，第二组是对照组。 实验组的成员被强制戒酒，对照组的成员不戒酒。三个月后，实验组成员的平均体重基本不变，而对照组成员的平均体重增加了十分之一。实验结果说明，饮酒会导致人体重增加口 以下哪项如果为真，最能支持上述实验的结论?( ) A.实验组和对照组成员的平均体重基本相同 B.实验组与对照组的人数相等 C.除戒酒外，对每个实验对象来说，可能影响体重变化的条件基本相同 D.除戒酒外，对每个实验对象来说，可能影响体重变化的条件基本保持不变
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