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

Crawler-HttpClient: get_text(next_url)

python verify.py submissions/your_submission.py，更多细节参见safew官方下载

SpaceX roc，详情可参考heLLoword翻译官方下载

Over the past 18 months, we’ve:，详情可参考51吃瓜

Москва внимательно следит за ситуацией между Пакистаном и Афганистаном, добавил Песков.

A12特别报道

It's also a busy time for hospitals as they discharge as many patients as possible so they can be at home for Christmas.