“丁零零……”上课铃响了,这是一堂作文课。老师转身在黑板上画了两条线段:一条横着的,一条竖着的。大家都奇怪:作文课怎么画起线段来了?这可不是数学课呀!“大家看一看,这两条直线哪条长?哪条短?”“竖的长!”我抢先说。“竖的长!”“竖的长!”大家也随声附和着。结果,通过老师的测量,两条直线是一样长的。老师又画了一个里面有横条的长方形和一个里面有竖条的长方形。老师问大家哪个大,这回大家都认为里面有竖条的大。可结果呢,还是一样大。 “Ding zero ... ...” The bell rang, this is a composition class. The teacher turned to draw two lines on the blackboard: a horizontal, a vertical. Everyone is weird: how to draw a line from composition class? This is not a math lesson! “Everybody has a look, which of these two straight lines which short?” “Long vertical!” I first said. “Long vertical!” “Long vertical!” Everyone echoed. As a result, the two lines are as long as measured by the teacher. The teacher also painted a rectangle with a horizontal bar and a rectangle with vertical bars inside. The teacher asked everyone which big, this time we all think there are vertical bars. But the result is still the same.