Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

2.【2024年全国甲卷语法填空】Yellowstone was the _________ (large) United States national park-2.2 million acres-until Wrangell-Saint Elias in southern Alaska, which became a national monument in 1978, took the ...

德国阿尔卑斯登山者Robert Jasper赢得波兰阿尔卑斯俱乐部/Polski Związek Alpinizmu的2024年Primus Inter Pares奖项。这是为褒奖他卓越的职业生涯成就，以及在阿尔卑斯登山探险运动中完成的先锋首攀。