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【单选题】

somE CitiEs hAvE pAssED lAws thAt Allow CoAl AnD oil______only iF thEir sulFur ContEnt is low.
A．Burning
B．to Burn
C．BEing BurnED
D．to BE BurnED

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根据网考网移动考试中心的统计，该试题：

23%的考友选择了A选项

15%的考友选择了B选项

10%的考友选择了C选项

52%的考友选择了D选项

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