一天,忽然想起20年前我上小学时,老师给我们做的一个试验。我何不再给我的学生做同样的试验,看结果如何?于是,我把一个长颈小口瓶子放在桌子上,把三个系着细绳的铅坠分给三个学生,让他们拿着绳子头,先后把铅坠放进瓶中。我对三个学生说:“这个瓶子,我们把它看作一口井,不过现在没有水。你们那铅坠代表你们自己,你们现在正在这枯井中玩,井口很小,一次只能爬上一个人。” One day, I suddenly remembered a test that the teacher gave us when I was in elementary school 20 years ago. Why don’t I do the same experiment to my students and see what the results are? So I put a long-necked, small-mouthed bottle on the table, and three lead-lined plummets were distributed to three students so that they could hold it. The head of the rope put the lead sinker in the bottle one after another. I said to the three students, “This bottle, we see it as a well, but now there is no water. Your lead sinker represents yourselves. You are playing in this dry well. The wellhead is very small and you can only climb one at a time. people.”