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【单选题】

First aid can save a person's life if ______ immediately and properly.
A．perform

B．performing
C．performed
D．to perform
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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

1%的考友选择了B选项

75%的考友选择了C选项

23%的考友选择了D选项

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