参考答案：
1-5 BCDCC 6-10 CACBC
11. longer and longer
12. quite difficult
13. children
14. care and attention
15. normal, everyday life
16-20 CDDAB
21-25 BAACB
26. (should)be
27. reasonable
28. proposal
29. are not allowed
30. eagerly
31. strength
32. had been produced
33. Taking
34. is
35. to rise
36-40 DBDBD
41-45 DBCDA
46. Air Conditioning System
47. engineering requirements
48. satisfactory
49. efficient
50. proposal
51-55 CL PD MA BK ZO
56. Christ Church
57. marked Private
58. picnicking
59. follow the advice
60. prevent crime
61-64 DCCB
65——