67 A aim at
68 D varies
69 C in control
70 B possess
71 D vast
72 A but
73 B essential
74 C in touch with
75 A acquire
76 B profession
77 D only
78 A with
79 C encourage
80 C interests
81 A broaden
82 A amid
83 D sake
84 B make
85 A field
86 C meaningful
87 can be applied to the development of the new technology
88 must be wrong
89 whatever it could be
90 Compared with the place where I grew up
91 Until he accomplished his mission
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