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:info-bj资讯

IBM had won the ATM market, and then lost it. Along the way, they left us with

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为应对客流高峰,铁路部门在京广、京沪、沪昆、京哈等主要高铁干线单日安排开行夜间高铁列车超 1000 列,并在热门方向增开临时旅客列车,单日最高增开 2314 列。