一、症状表现因办学规模的不断扩大,新学期,学校对各个班级的教室重新作了安排,我班从JC104室搬到了JC403室。在开学之初的两天内,班干部组织全班同学对新教室进行了比较全面的打扫和整理,门窗、玻璃、卫生角、墙壁等都明显变得干净了,但是,由于403室闲置时间较长,地面虽经过同学们的处理,仍然较脏。显然,只靠平常那样的打扫和单纯的拖地方式难以从根本上清除长久附着在地板上的 First, the performance of symptoms Due to the continuous expansion of schooling, the new semester, the school re-arranged classrooms for all classes, I moved from Class JC104 room JC403 room. Within two days at the beginning of the class, the class cadres organized a whole class of classmates to clean and organize the new classrooms more completely. The windows, glass, health corners and walls were clearly clean. However, due to the idle time of Room 403 Long, although the ground after the students deal with, still dirty. Obviously, it is difficult to remove the long-term attachment to the floor only by usual cleaning and simple mopping methods