问题
选择题
If mankind is trying to find new places in space to live and get new resources, it is fine. [ ]
A .the; the
B. /; /
C. a; the
D. the; a
答案
答案：B
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If mankind is trying to find new places in space to live and get new resources, it is fine. [ ]
A .the; the
B. /; /
C. a; the
D. the; a
答案：B
