One day, the teacher inquired Peter: "How much is four minus four?" Peter was tongue-tied.
The teacher got angry and said: "What a fool! You see, if I put four coins in your pocket, but there is a hole in your pocket and all of them leak out, now what is left in your pocket?"
"The hole." replied Peter.
四减四等于几?
一天,老师问彼得:“4减4等于几?”彼得张口结舌答不上来。
老师生气地说:“真苯!比如我给你衣袋里装进4个硬币,可你衣袋上有个窟窿,硬币全从这里漏掉了,那么,你衣袋里还剩下什么?”
“还剩下个窟窿。”彼得答道。