【单选题】
We have had to raise the prices of our products because of the increase in the cost of ________materials.
A.primitive
B.rough
C.original
D.raw
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根据网考网移动考试中心的统计,该试题:
11%的考友选择了A选项
0%的考友选择了B选项
9%的考友选择了C选项
80%的考友选择了D选项