ing, college stu\rdents in expanding numbers get on line every day to learn the news, t\ro study English by registering for web courses, to exchange informati\ron through e-mails with their net friends and to download their favor\rite music, flash, film and pictures. Being veteran on-line shoppers,\rthey frequently purchase books, CDs at much lower prices. For anothe\rr, once indulged in the fictitious world, people can barely concentr\rate on real life. Consequently, many students just chat on line or p\rlay computer games immoderately everyday, skipping many essential cla\rsses. After all, Internet is invented to enrich our life, to connect\ryou and me, and to improve the efficiency of our work rather than sh\rackle us with a chain.