1. N
2. Y
3. Y
4. NG
5. a trip to the Mir Space Station
6. a space hotel
7. small gravitation pull
8. the fuel of spacecraft
9. $50,000
10. space travel
11. -46 暂缺
47. as a blessing
48. simplified
49. their house need to be simplified
50. different
51. make a list of the unnecessary things before unloading them
52. B the instinctive fear human being feel when faced with potential danger
53. D the amygdale plays a vital part in human and animal responses to potential danger
54. A a little worry will do us good if handled properly
55. D understand the situation and be fully prepared
56. B understandable
57. B Their intense desire for money
58. C He could not get his students to understand the importance of ethics in business
59. D there was no place for ethics and morality in business dealings
60. A the tendency in business school to stress self-interest over business ethics
61. A the calls for reform will help promote business ethics
62. on → in
63. day和the之间插入when
64. demand → demanding
65. 去掉to
66. in → that
67. writing → write
68. desirable → undesirable
69. begin → began
70. its → their
71. nation → national
72. followed my advice, you would not be in trouble now.
73. watched her injured son sent into the operation room.
74. were advised not to travel to that country at the moment
75. via E-mail instead of telephone
76. Until the deadline came, he didn’t sent out