A. chance

B. fate

C. lesson

D. idea

65. (   )

A. case

B. voice

C. job

D. type

答案：

51. defensive

52. diseases

53. demolished

54. but

55. actual

56. borders

57. down

58. because

59. maintain

60. intention

61. preservation

62. mean

63. replaced

64. chance

65. job