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【单选题】

We all agree that computers are essential ______ the problems of increasing population.
A.to solve

B.to solving
C.solving
D.of solving
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根据网考网移动考试中心的统计,该试题:

7%的考友选择了A选项

78%的考友选择了B选项

4%的考友选择了C选项

11%的考友选择了D选项

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