31.A)They may have to continue to work in old age
32.B)Making wise use of your time。
33.C)Innocent people being suspected groundlessly。
34.D)Allowing only two students to enter at a time。
35.B)He was closely watched。
36 international
37 revolution
38 emphasized
39 poor-paying
40 effectively
41 freelancewriter
42 conditioned
43 reasonably
44 The earthquake left thousands of people in urgent need of medicar care。
45 There is no denying the fact that he has directed the most popular film in ten years。
46 A lighted cigarette thrown out of a car or train window can star a fire。
选词填空：
47.raised
48.displayed
49.contributions
50.abilities
51.achieve
52.smart
53.proceeds
54.indicates
55.essentially
56.evevtually
