学校新修了厕所,卫生、美观、舒适。可是,开学几天以后,我就发现男厕所的小便池发出难闻的气味,充满了整个男厕所空间。于是,我找来好朋友纪晓晨、蒋竞明一起想办法解决这个问题。我们发现.小便池的上面有一个冲水器,用手动开关控制。只要打开开关,冲水10秒钟,臭味就没了。可是,谁来控制这个开关呢?我们带着这个问题去找教自然课的冯老师。冯老师没有回答我们的问题,倒是问 The school has newly built a toilet, which is hygienic, beautiful and comfortable. However, a few days after school started, I discovered that the urinal in the men’s room had a bad smell and filled the space of the entire men’s room. So, I found a good friend Ji Xiaochen, Jiang Jingming together to find a solution to this problem. We found that there was a flusher above the urinal, controlled by a manual switch. Just open the switch, flush for 10 seconds, and the odor will be gone. However, who controls the switch? We took this question to find Teacher Feng of the nature class. Teacher Feng did not answer our questions. Instead, she asked