55. 

38. The green shirt is either ______. 

36. Please come at six if ______. 

30. We have three sons but ______ of them lives nearby.

47. 

73. Which of the following can we draw from the para. 1?

51. 

49. 

71. According to the passage, the followings are the impacts of enterprises’ pursuit of low labor costs and high working efficiency except “______”. 

62. Number the following below to show the order in which they appear in the passage. ①Stephen became very interested in black holes. ②Stephen was the eldest child of Frank Hawking and Isobel Walker. ③Stephen built a computer out of old clock and telephone parts. ④Stephen’s mother moved away from London. 

59. When did Stephen become interested in science?

46.