我曾经听到过这样一则故事。一位科学家给小学生做一个实验。他端来满满一杯水,向水里丢了一颗石子,杯子里的水便漫了出来。科学家说:“如果放进去的是金鱼,水就不会往外漫。这是为什么呢?”一个学生说:“金鱼身上有鳞。”另一个学生说:“金鱼把水喝进肚子里去了。”玛丽亚觉得他俩说得都不对,可自己也不明白。她就找来一条金鱼,把它放进满满的一杯水里。哎呀,水漫出来了。她很奇怪,就去问科 I have heard such a story. A scientist makes an experiment for pupils. He came full of a glass of water, dropped a stone into the water, and the water in the cup burst out. Scientists say: “If you put in a goldfish, water will not go out. Why is this?” One student said: “Goldfish body scales.” Another student said: “Goldfish to drink water Going into the stomach. ”Maria felt neither of them was right, but she did not understand either. She got a goldfish, put it into a full glass of water. Oops, the water is out. She is very strange, went to ask subjects