“刘宽,注意听讲!”老师一脸严肃。瞧,刘宽又开小差了,他是我的好哥们儿,上课时老是坐不住,为此没少挨老师批评。要是能发明一种课堂监督仪,自动提醒他上课认真听讲,那该多好啊! “Liu Kuan, pay attention to listen! ” The teacher looks serious. Look, Liu Kuan opened up again, he is my good buddy children, always sitting in class, this is not less criticized by teachers. If you can invent a classroom monitor, automatically remind him to attend the class to listen carefully, then how wonderful!