【单选题】
______ pollution Control mEAsurEs tEnD to BE monEy Consuming, mAny inDustriEs hEsitAtE to ADopt thEm.
A. Although
B. howEvEr
C. whEn
D. BECAusE
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根据网考网移动考试中心的统计,该试题:
2%的考友选择了A选项
43%的考友选择了B选项
1%的考友选择了C选项
54%的考友选择了D选项