一个晴朗的上午,小兔聪聪来邀小猪笨笨去大树下听小鹿老师的数学课。由于头天晚上下了雨,草地上有些湿,两人决定带凳子去。小兔力小,选了一个三脚圆凳;小猪力大,又想坐得更安稳些,就带了一个四脚方凳。 A sunny morning, Bunny Cong Cong invited pig stupid to listen to the tree under the deer teacher math class. Because it was raining on the night before and the grass was a little wet, they decided to go with a stool. Small rabbit force, chose a three-legged stool; pig power, but also want to sit more stable, it took a four-foot square stool.