2. 职称英语
  3. It has been demonstrated that rats will, when given a choice over a period of ti

It has been demonstrated that rats will, when given a choice over a period of ti

游客2025-03-14  36
问题 It has been demonstrated that rats will, when given a choice over a period of time, prefer water with vitamins to water without vitamins even though there is no difference in taste or smell between the two water bottles.
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答案 有证据表明，在一段时间内，如果让老鼠去挑选的话，它们会选择含有维生素的水瓶，即使两瓶中的水在味道上并无差异。
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