机灵小勇士:魏金蓉(太原)砸来的问题:每次在电视上看见火烈鸟,发现它们都是单脚站在水里睡觉,为什么?火烈鸟有许多强大的天敌,必须随时保持高度警惕。如果它们像其他动物一样躺下睡觉,一旦遇到危险,根本来不及起飞,所以它们选择站着睡觉。然而,长时间站立是件很疲劳的事,聪明的火烈鸟们想出了一个好主意:当它们睡 Smarter Warriors: Wei Jinrong (Taiyuan) smashed the problem: Each time you see a flamingo on television and found that they are standing in the water to sleep in one foot, why? Flamingos have many powerful natural enemies, you must always maintain the height alert. If they lie down and sleep like other animals, they do not even have time to take off if they are in danger, so they choose to sleep. However, standing up for a long time is a very tiring thing, and intelligent flamingos came up with a good idea: When they sleep