【单选题】
Advertising media like direct mail, radio, television and newspapers ______ to increase the sales of industrial products.
A.have been used
B.will be used
C.is being used
D.has been used
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根据网考网移动考试中心的统计,该试题:
72%的考友选择了A选项
19%的考友选择了B选项
5%的考友选择了C选项
4%的考友选择了D选项