Chọn đáp án đúngComputers are helpful (19) ......... many ways. First, they are fast. They can work with information even (20)........... quickly than a person. Second, computers can work with a lot of information at the same time. Third, they can (21) ........... information for a long time. They do not forget things that the common people do. (22) ..............., computers are almost always correct. They are not perfect, but they usually do not (23) ...........mistakes. Recently, it is important (24) ............about computers. There are a number of things to learn. Option 1 19. * 3 điểm A. at B. on C. in D. over 20. * 3 điểm A. more B. rather C. much D. less 21. * 3 điểm A. hold B. keep C. stay D. carry 22 * 4 điểm A. Moreover B. However C. Therefore D. Nevertheless 23. * 4 điểm A. do B. make C. have D. take 24. * 3 điểm A. know B. knowing C. to know D. knew |