“嘀,嘀,嘀……”手表上的指针依然不紧不慢地走着。而老师依旧是一副“陶醉”样,可同学们已听得昏昏欲睡。忽然,一张纸条传递到了同学们手中,使大家精神一振,再看看班级墙上的时钟,嘴角不禁扬起一丝笑意。“哦!临下课还有10分钟!”同学们兴高采烈,一时间小动作遍布全班,拿篮球的、拿手 “Di, Di, Di ... ” The pointer on the watch is still walking slowly. The teacher is still a “intoxicated ” kind, but students have heard drowsy. Suddenly, a piece of paper passed to the hands of students, so that everyone excited, and then look at the wall clock class, mouth can not help but raise a trace of smile. “Oh! There are 10 minutes before class! ” Students elated, a little trick all over the class, take basketball, catch