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.

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Introduction to events: event propagation — MDN Web Docs

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Овечкин продлил безголевую серию в составе Вашингтона09:40

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delays

（五）核技术应用，是指放射性同位素和射线装置等非动力核技术在国民经济和社会发展各领域的应用。