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：tutorial资讯

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Starring: Jared Keeso, Tasya Teles, Blair Lamora, Keilani Elizabeth Rose, Ryan McDonell, Camille Sullivan, Jonathan-Ismaël Diaby, Terry Ryan, and Harlan Blayne Kytwayhat

影片在去年 12 月于美国和中国大陆同步上映，由詹姆斯 · 卡梅隆执导，剧情继续围绕杰克 · 萨利与奈蒂莉一家展开，叙事聚焦家族在战火中的成长与抉择，同时引入「风之商人」「灰烬族」等全新族群，扩展潘多拉星球的文化与冲突结构。

Mechanisms

Repetition: The tool provides recommendations for replacing the repeated word.