下面是某英语教师对学生作业的批改案例：
I think the most important sense is hearing. If I lose the ability of hearing, I also can’t speak. To lose hearing means
losing to lose two important functions(of human). An behind them Deaf-and-dumb people cannot hear the bus noise even if the accident happens in their back. This is the most important Problem are riding ploblem for them. For example，suppose that they ride a bike in the busy street. We，normal peoplefeel the dangerous sense bythe noise，which is made by ears. We can avoid them and drive safely. Deaf people always expode their to danger.
