The BadCell phones are a distraction – The students use short message service (SMS) and not everyone remember to turn off their phone during class.Cheating – Students can share information during ex...大神~写作文题目就是那个 怎么你写了两篇~唉唉，选择一个GOOD OR BAD你的意思是 我写的作文从你的goodbad 中随便抄一点~但你只能抄同一个种类的。不是GOOD就是BAD，两个不能混