【单选题】
Unlike competitive running , race walkers must always keep some portion of their feet in contact with the ground.
A.run
B.runner
C.runners
D.running race
正确答案
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答案解析
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根据网考网考试中心的答案统计,该试题:
3%的考友选择了A选项11%的考友选择了B选项85%的考友选择了C选项1%的考友选择了D选项