67. A) at 68. D) varies 69. A) prospect 70. B) possess 71. D) vitual

　　72. A) But 73. B) essential 74. C) touch 75. A) acquire 76. B) profession

　　77. D) only 78. A) with 79. C) encourage 80. C) interests 81. A) broaden

　　82. B) After 83. D) sake 84. B) make 85. A) field 86. C) meaningful