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【单选题】

Between 1897 and 1919 at least 29 motion pictures in which artificial beings were portrayed________.
A．had produced
B．have been produced
C．would have produced
D．had been produced

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根据网考网移动考试中心的统计，该试题：

9%的考友选择了A选项

21%的考友选择了B选项

17%的考友选择了C选项

53%的考友选择了D选项

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