【单选题】
The world's oil supply
A、haven been gradually being exhausted
B、is being gradually exhausted
C、is gradually exhausted
D、has gradually exhausted
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根据网考网移动考试中心的统计,该试题:
44%的考友选择了A选项
50%的考友选择了B选项
4%的考友选择了C选项
2%的考友选择了D选项