假期中,爸爸带我来到乡村的打谷场。看到一堆一堆的稻谷,我感到很新鲜。走到一个谷堆前,爸爸突然问:“文烨,你看看,这个谷堆是什么形状呀?”“这个谷堆呀,上头尖,下面圆,好像是……”我想了想,叫道,“对了,我在数学课上学过,这种形状叫圆锥体。”爸爸接着说:“那你知道 During the holidays, my father took me to the rural threshing floor. I feel fresh when I see a pile of rice. Dad suddenly asked: ”Wen Ye, you see, what is the shape of the valley heap? “ ”This valley heap ah, the tip of the head, below the circle, seems to be ... “ I I thought, cried, ”Yes, I learned in math class, this shape is called a cone.“ ”Dad went on to say: " Then you know