... Internet: It is used for multi- purposes: for getting information, for education, communication, entertainment, and commerce. 5. Yes, there are some disadvantages. It is time-consuming, costly, dangerous ... informationEducationCommunicationEntertainment Commerce Time - consumingCostlyDangerous because of viruses and bad programsIV. Summary I. Vocabulary:1. Surf the web (v): lướt web2. Forum (n): diễn đàn3. E-mail (n): thư điện ... (n): diễn đàn3. E-mail (n): thư điện tử4. Benefit (n) lợi ích >< disadvantage (n): hạn chế 5. Get access (v): tiếp cận6. Wander (v) : lang thang7. Time – consuming (adj):mất thời gian8....