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【单选题】

Drinking water ________ excessive amounts of fluorides may leave a stained or mottled effect on the enamel of teeth.
A．containing

B．in which containing
C．contains
D．that contain
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根据网考网移动考试中心的统计，该试题：

81%的考友选择了A选项

8%的考友选择了B选项

10%的考友选择了C选项

1%的考友选择了D选项

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