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，这一点在搜狗输入法下载中也有详细论述
Фото: Jamal Awad / Reuters
Цены на нефть взлетели до максимума за полгода17:55
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Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.
· 吴鹏 · 来源：dev资讯