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【单选题】

He ______ his head, wondering how to solve the problem.
A．scrapped

B．screwed
C．scraped
D．scratched
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根据网考网移动考试中心的统计，该试题：

7%的考友选择了A选项

12%的考友选择了B选项

6%的考友选择了C选项

75%的考友选择了D选项

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