人到老年,记忆力衰退得惊人,可是,50年前一道题我至今不能忘怀,而且珍藏永远。1953年下半年,我在庐江县矾山中学初二年级读书。教我们数学的是张勋筹老师。一次几何测验,我很快答好交卷,满以为全对。可是,张老师却在“已知两角夹一边,求作三角形”一题中扣了1分。我看着发回的答卷,怎么也看不出错 People to old age, memory loss staggering, however, a question 50 years ago I can not forget, and treasure forever. In the second half of 1953, I was a sophomore in Lujiang County, Fanshan Middle School. Zhang Xunzuo teacher taught us mathematics. A geometric test, I quickly submitted, full thought all right. However, Zhang teacher in the “known folder folder side, seeking a triangle,” a deduction in a question. I looked back to the answer sheet, how can not see the error