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.

· · 来源：study资讯

在2022年春季学期中央党校（国家行政学院）中青年干部培训班开班式上，习近平总书记深刻指出：“树立和践行正确政绩观，起决定性作用的是党性。”

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Цены на нефть взлетели до максимума за полгода17:55

Laura CressTechnology reporter

Apple iPho

难道说未来真的不再需要电脑了？