食盐溶于水,驴子跌倒在水里再爬起来,感觉身上变轻了,所以它自作聪明,每次过河时都故意摔倒。可是棉花吸水,驴子摔倒在水里再爬起来,棉花比以前重多了,所以从此它再也不故意摔倒了。聪明的泰勒斯@郭书龙@桃子 Salt dissolved in water, donkey fell in the water and then get up, feeling lighter, so it clever, every time when the river fell deliberately. But cotton absorbs water and the donkey falls in the water before climbing again, and the cotton is heavier than before, so it never falls by accident. Clever Thales @ Guo Shuo Long @ peaches