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

52. What does the author imply by saying "this isn＇t always the case" (Line 1, Para. 3)?

51. What does the author think of most entrepreneurs?

50. What does the author advocate for people to live well?

49. What kind of social system does the author think is unacceptable?

48. What questions arise from living big?

47. What is one of the consequences of living big?

46. What are big houses promoted to be in the United States?

30. The author expresses his concern at the end of the passage that

29. What is the author＇s view of face-to-face communication?

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