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【单选题】

Under proper conditions, sound waves will be reflected from the hillside or other such obstruction.
A．mirrored

B．bounced back
C．absorbed
D．soaked through
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根据网考网移动考试中心的统计，该试题：

18%的考友选择了A选项

72%的考友选择了B选项

3%的考友选择了C选项

7%的考友选择了D选项

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