37. A digital camera is more economical than a film camera since you don’t have to buy rolls of films.

A. better                      B. cheaper                   C. safer                        D. stronger

38. You can use earbuds to listen to music or your listening everywhere, even in public place, as nobody is disturbed.

A. annoyed                  B. connected               C. imitated                  D. interacted

39. You can use a USB stick to transport files from one computer to another.

A. delete                      B. display                     C. transfer                   D. store

40. Smartphones are very versatile, as they can do many things like making phone calls, taking pictures, or listening to music.

A. capable                   B. flexible                    C. helpful                     D. interesting

41. Apple iPad has remained the single most popular tablet PC ever since 2010.

 A. became                  B. continued                C. existed                    D. stopped

42. A 3-D printer can produce solid objects similar to the originals.

A. images                    B. models                    C. papers                     D. pictures

43. There are many traffic jams during rush hour.

A. congestion              B. riders                      C. road signs               D. transportation

44. When collapsing the wings, a flying car is just a little bit bigger than a normal car.

A. dropping                 B. fixing                       C. folding                     D. opening

Exercise 5. Mark the letter A. B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

45. Nutritious snacks provide an important contribution towards your child’s daily nutritional needs.

A. Inexpensive B. Uncooked                C. Unhealthy                           D. Unpacked

46. A smartphone is too costly for him to even have a normal one.

A. economical             B. expensive                C. priceless                  D. valuable

47. Many people are afraid that computers with superhuman intelligence will destroy humanity.

A. awareness               B. perception              C. stupidity                     D. wisdom

48. Speakers are too bulky. You cannot put them in your bag or your pocket.

A. giant                        B. heavy                      C. large                       D. tiny

49. A digital camera is convenient as it is quick to view and delete as well as easy to transfer photos to a computer.

A. harmful                   B. inexpensive             C. uninteresting          D. useless

50. Even the best invention may have drawbacks. A laptop, for example, is expensive so many people cannot afford it.

A. advantages             B. disadvantages         C. shortcomings          D. weaknesses