Should mobile phones be allowed at school?
   Some mobile phones are more than just phones---(此处为破折号)they are being used as radios, cameras (照相机) and MP4 players, and they are also used to send e-mails or surf the Internet.
   
People have different ideas about whether (是否) students should use mobile phones at school or not.      If their parents have something important to tell them, they can call their teachers for help. If someone’s mobile phone rings during a Chinese class, he and his classmates can’t concentrate on (集中注意) what the teacher is saying. Some parents also point out that their children often use their mobile phones to download (下载) unhealthy information from the Internet.      
Other people believe that we can find some ways to use mobile phones to help students learn better in the classroom, since many of today’s mobile phones are like mini computers. And children usually know more than adults about how to use new technology (技术).      
What are your answers to the question?
根据短文内容, 从方框中选出五个句子填入文中空缺处, 使短文内容完整正确。