28. Wpat does the author say about the advantage of chatting online?

47. Why did Bill Thomas try something different in the nursing home?

46. What has Bill Thomas been doing for a quarter of a century?

55. What did the joint study find about the MOOCs several years ago?

54. What does the author say causes refugees＇ difficulty in taking online courses?

53. What does the passage say is a consequence of the global migrant crisis?

52. What do we know about "Coursera for Refugees"?

51. Why is the U.S. State Department launching an online learning program for refugees?

50. What is said about those working with or under overachieving people?

49. What may happen to smart people who find it difficult to accept suggestions?

48. How do smart people react when they are found to be wrong?