At present, many students in our class have made mobile phones or computers. With these tools, they can keep in touch or search for the news or information they need. Generally speaking, with these tools, our life becomes convenient and fast. However, sometimes, these communication tools may also bring us some troubles. For example, when we are in class, someone's cell phone rings, so at this time, this classmate may feel embarrassed, because he or she didn't mean to interrupt our teacher's teaching and other people's ideas, so he or she must go out of the classroom to answer the phone, and if our teacher continues the class at this time, this classmate may miss what the teacher said. Therefore, in order for all students to study hard and make progress in their study career, it is suggested that we should turn off our mobile phones in class.
As for the computer, as far as I am concerned, we can use it on weekends or in our spare time instead of playing computer games crazily. We can use it to do what we should do.