46. What does the Indiana University study show?

15.At the end of the historic area, Wilmington displayed its _______ as a working port city: large ware-houses and a few other dated office buildings.

53. According to the author, the refrigerator magnet is ________.

37.

43. According to this passage, the sea _____ is likely to have the lowest salinity.

40.

12. A Russian plane broke up in the air, ________ all 224 people on board which was believed ________ by a bomb planted by Islamic State.

55. Compared with the door hangers, the refrigerator magnet now excels at ________.

23.

49. Which of the following is true about the research under discussion?

41. The best title of the passage can be ________

45. What does Sam Boakye’s remark mean?