有位哲人曾经说过这样一句名言：“灾难永远是突如其来的，有了准备就不是灾难。”心理学实验证明：一群人站在高楼下面闲聊，突然一个铁架从高处坠落，有人大叫：“躲开。快。”可绝大多数人都脚发软，手发抖，心急气喘，根本迈不开步，丧失了逃生的最佳时机。这些人不是体力 A philosopher once said such a famous saying: “The disaster is always sudden, with the preparation is not a disaster.” Psychological experiments show that: a group of people standing in the chat below the tall buildings, and suddenly a metal frame from a height fall, someone shouting : “Dodge. Fast.” The vast majority of people are soft-footed, shaking hands, panic, did not start, lost the best time to escape. These people are not physical