眼皮受不住瞌睡的拷问,快要合上了……恍惚间,似乎看到黑板上的化学式朝我轻蔑地一笑。它在笑我的无能,还是笑我的懒惰?就这样想着,头不知不觉地越来越低。忽然,看见旁边有一双黑色皮鞋,我一下子意识到情况不妙,也不敢抬头,怕老师注意我。幸好,老师只是从我旁边经过一下,我舒了口气。尽管我使劲掐自己,把眼珠瞪大,但瞌睡虫还是爬满了全身。它们似乎准备全面攻击我的大脑了。我硬逼着大脑与它们抗衡,把注意力集中到黑板上,但是敌军太凶猛,我束手无力。朦朦胧胧中,我看见化学老师在那里眉飞色舞,唾沫四溅,可我不知道我在哪里。有人在黑板上写什么,那人的嘴还在一直动一直动 The eyelids can not help but sleepy torture, about to close ... ... trance, it seems to see the chemical formula on the blackboard contempt for me smile. It is laughing at my incompetence, or laughed at my lazy? Think of it, head unknowingly getting lower and lower. Suddenly, I saw a pair of black shoes next to, I suddenly realized the situation is not good, but also afraid to look up, afraid of the teacher pay attention to me. Fortunately, the teacher just passed by me and I was relieved. Although I pinch myself hard and widen my eyes, sleepy insects still cover the whole body. They seem ready to fully attack my brain. I forced the brain to contend with them and focused my attention on the blackboard, but the enemy was fierce and I was weak. Hazy, I saw the chemical teacher there enraptured, splashed, but I do not know where I am. Someone wrote on the blackboard, the man’s mouth still been moving