4 - 4 = ? One day, the teacher inquired of 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:“真笨!
你想,我要是往你口袋里放四个硬币,而你的口袋上有个窟窿,硬币全漏掉了,那么,你
衣袋里还剩下什么?”“窟窿,”彼得答道。
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