急需
cellphones have changed our behaviour and how we communicate.they are being used everywhere-sometimes where they shouldn't,One headmaster stays that phones are not allowed in the classroom."If a phone starts ringing in the classroom,teachers and students are disturbed and cannot work."the students obey the rules and agree not to use their phones in the classroom."I don't dare to use the phone in school,because they will take it away from me,"says John Hill,astudent in London.John got his phone for his birthday,but his parents don't let him use it in school.some parents worry that their children will spend too much time and money on phone calls这是其中一段,好难打你门找吧