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【单选题】

Thereisa()ofrawmaterialforplasticproducts.Asaresult,thepricesaregoingup.
A.scarcity
B.demand
C.surplus
D.adequacy

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根据网考网移动考试中心的统计,该试题:

63%的考友选择了A选项

21%的考友选择了B选项

7%的考友选择了C选项

9%的考友选择了D选项

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