题目

What looks like an angry old man and lives at the bottom of the ocean? It’s the world’s ugliest animal---the blobfish(水滴鱼). Its strange skin is shaped by its habitat. It lives 800 meters below the ocean’s surface, a depth where very few other creatures can survive. Most fishes have a swim bladder(鱼鳔), which is filled with gas and helps them stay afloat. At the depth that the blobfish live, water pressure is 80 times higher than that at higher sea levels and any swim bladder wouldn’t be able to serve its purpose. The blobfish don’t have a swim bladder because their skin一个圆柱和一个圆锥体积相等，圆柱底面积是圆锥的3倍，圆柱高是圆锥的1919．