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【单选题】

Since Jonas Salk came up with his polio vaccine, infantile paralysis has virtually disappeared from the United States.
A．surfaced with

B．raised the price of
C．discovered
D．elevated
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根据网考网移动考试中心的统计，该试题：

4%的考友选择了A选项

18%的考友选择了B选项

53%的考友选择了C选项

25%的考友选择了D选项

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