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假如世界末日来临,地球上所有的陆地都被破坏了,唯一幸存下来的一块陆地就是北京。当然,这只是假设。此时人类已经在宇宙中找到了一个适合人类居住的星球,需要把地球上所有的人都汇集在北京,来集中救援。那么这些人密密麻麻地站在一起,能挤满北京的二环、三环还是五环呢?为了方便计算,我们不妨作出三个假设。1.假设树木、房屋都已经被拆除,大型汽车、飞机之类的都扔进了水里,北京现在只剩平平整整的地面了。
If the end of the world is approaching, all the land on the earth is destroyed, and the only land that has survived is Beijing. Of course, this is just hypothetical. At this time, mankind has found a planet suitable for human habitation in the universe and needs to bring all the people on earth to Beijing to concentrate on the rescue. So these people crowded together to be able to squeeze Beijing’s second ring, third ring or five ring it? To facilitate the calculation, we may wish to make three assumptions. 1. Assuming that trees and houses have been dismantled, large cars, planes and the like are thrown into the water. Beijing now has only an even surface.