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：dev资讯

Stronger-than-expected job gains in January could be a sign that hope is on the horizon for job seekers.

▲ 传统防窥膜结构，图片来自@上海复瞻智能科技

03版，推荐阅读heLLoword翻译官方下载获取更多信息

Цены на нефть взлетели до максимума за полгода17:55，推荐阅读旺商聊官方下载获取更多信息

11月22日，板厂小学与汇文实验小学朝阳学校第十四届“智慧杯”科技节开幕。新京报记者 李木易 摄

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Елизавета Городищева (Редактор отдела «Экономика»)