在外国,一位老师引导学生做了一个非常有趣的实验——“火海逃生”。老师将许多乒乓球放进瓶子,只露出系着的棉线。花瓶代表楼房,细细的瓶颈是唯一的出口,七只乒乓球是居民,要求当大楼起火时,全体居民能在短时间里安全逃离。七名学生兴奋地上场了,他们个拿一根棉线,都以最快的反应拉扯棉线,可一个“人”也没能脱离火海,原来,七只乒乓球都卡在了瓶口。这几个学生面面相觑只见其中一个小声跟同伴们商量了几句,又开始了新的一次实验,这回大家没有各顾各的拉棉线,而是由左到右依次地拉。果然,火还没有起来时,七位“居民”已离开了出口。
In foreign countries, a teacher guided the students to do a very interesting experiment - "fire escape". The teacher put many ping-pong balls into the bottle, only showing the cotton thread. The vase represents the building. The narrow bottleneck is the only exit. Seven ping-pong balls are residents. When the building is on fire, all residents can escape safely in a short time. Seven students came on stage excitedly. They each took a piece of cotton thread and pulled it with the fastest response. However, one "person" did not get out of the fire. It turned out that seven ping-pong balls were all stuck at the mouth of the bottle. The students looked at each other and saw that one of them had a few words to discuss with his companions and started a new experiment. This time, instead of taking care of each other's cotton thread, they pulled it from left to right in turn. Sure enough, before the fire started, the seven "residents" had left the exit.
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