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【单选题】

Throughout history ........ different representations for numbers and for the basic process of counting.
A．( have been many

B．( them have been many
C．( many
D．( when many
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根据网考网移动考试中心的统计，该试题：

15%的考友选择了A选项

76%的考友选择了B选项

7%的考友选择了C选项

2%的考友选择了D选项

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