有心理学家做过这样一个试验:将两只小白鼠放入一个装了水的器皿中,它们会拼命地挣扎求生,一般维持的时间约8分钟左右。然后,他在同样的器皿中放人另外两只小白鼠,在它们挣扎了5分钟左右的时候,放入一个可以让它们爬出器皿的跳板,这两只小白鼠得以活下来。若干天之后,再将这两 Some psychologists have done such a test: the two mice into a water container, they will desperately struggling to survive, the general maintenance time is about 8 minutes. Then he put two other mice in the same vessel and put them on a springboard that allowed them to climb out of the vessel for about five minutes as the two mice survived. A few days later, then these two