“叮叮叮,叮叮叮……”下课了,同学们都急匆匆地跑出教室,走出校门,小宇和小兰也随着人群而去。“哎哟”一声,惊动了人们,仔细一看,原来是小兰走路不看路,一不小心就踩中了一块香蕉皮,摔倒了。小兰拍拍身子,慢吞吞地站起来,发现身前的垃圾箱旁有一堆臭垃圾。垃圾上面有许多苍蝇在飞来飞去,而过往的人们都视而不见。小兰说:“嘿,这些人真不讲文明,垃圾都没有扔进垃圾箱,随手一扔就算了,小宇 ”Ding Ding, Ding Ding Ding ... “ get out of class, and the students are hurriedly ran out of the classroom, out of school, Xiaoyu and Xiaolan also with the crowd away. ”Oh “ soon, alerted the people, a closer look, the original Xiaolan walk not see the road, accidentally stepped on a banana peel, fell down. Xiaolan patted himself, slowly stood up and found a pile of stinking garbage in front of the trash. There are many flies flying above the trash, and the people in the past turned a blind eye. Xiaolan said: ”Hey, these people really do not speak of civilization, trash are not thrown into the trash, fling even forget, Xiaoyu