For students, the network expanded our knowledge and gave us space travel . First , it is in our lives and gave us great help . Second, you can directly browse books at home . Third, within the shortest time over details , they want to know. But the network has a bad place . First , for a long time to face the computer easy to myopia. Second, the Internet makes many young people addicted to the virtual world , delayed learning . Third, the adverse information and cyber crime on young people 's health and safety hazards and pose the threat . So we must be good at using computers to help us learn .