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【单选题】

New data has ______ that the damage to the ozone layer is not confined to the southern hemi- sphere.
A．ratified
B．confirmed
C．assured
D．approved

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根据网考网移动考试中心的统计，该试题：

1%的考友选择了A选项

60%的考友选择了B选项

5%的考友选择了C选项

34%的考友选择了D选项

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