科学家做过一项实验:把一只青蛙放到盛满凉水的大锅里,然后,用小火慢慢加热,青蛙没有感到温度的慢慢升高,一直在水中欢快地游动。随着水温逐渐增高,青蛙的游动渐趋缓慢。等到温度升得很高时,青蛙已变得非常虚弱,无力争扎,慢慢而又安乐地被煮死。第二次科学家把一只青蛙放到盛满开水的大锅里。这只青蛙一入水,便立刻感觉到环境的变化,迅速挣扎,蹦跃出 Scientists did an experiment: put a frog in a large pot filled with cold water, and then slowly heated with a small fire, the frog did not feel the temperature slowly rising, has been swimming in the water cheerful. As the water temperature gradually increased, frog swimming gradually slow. Until the temperature rises very high, the frog has become very weak, unable to fight, slowly and comfortably to be boiled. The second scientist put a frog in a big pot full of boiling water. When the frog entered the water, he immediately felt the changes in the environment, swiftly struggled and jumped out