我在上“观察、思考、积累”复习课时,忽然发现一位同学在不停地笑,当我问他笑什么时,全班同学都争着告诉我:“老师,您背后有一只白鸽。”我扭头一看,可不是吗,一只白鸽正在窗台上好奇地往教室里看呢。同学们全站了起来,都想看得更清楚,一时间课堂秩序大乱……此时如果我大喊一 When I was reviewing, thinking and accumulating, I suddenly realized that one of my classmates kept laughing. When I asked him what he was laughing at, all the students in the class were vying to tell me, “Teacher, there is a white pigeon behind you ”I turned to see, is not it, a white pigeon is curiously looking into the classroom on the windowsill? All the students stood up, all want to see more clearly, chaos for a time classroom order ... ... At this time if I shouted