今天,我学到了一个新知识——树木的叶子为什么秋天会落,准备中午在妈妈面前好好显摆显摆。放学一回到家,我就假装疑惑地问:“妈妈,树木的叶子到了秋天为什么会落下来呢?”妈妈绞(jiǎo)尽脑汁思考了好半天,最后,摇摇头说:“这个问题,我也不知道呀!”我心里暗暗得意,哈哈,连最聪明的妈妈都不知道答案的问题,我却知道!这时,妈妈反问我:“你知道为什么吗?”我立刻胸有成竹地回答:“落 Today, I learned a new knowledge - why the leaves of trees fell in the fall, ready to show off in front of the mother at noon. When I got home from school, I pretended puzzled and asked: ”Mom, why do the leaves of trees fall in the fall?“ ”My mother twisted my brain for a long time and finally shook her head and said:“ This I do not know the problem! ”My heart secretly proud, ha ha, even the most clever mother do not know the answer, I know! At this time, my mother asked me: “ Do you know why? ” Immediate answer: "fall