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【单选题】

Oneoftherequirementsforafireisthatthematerial______toitsburningtemperature.
A、wereheated
B、mustbeheated
C、isheated
D、beheated

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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

26%的考友选择了B选项

6%的考友选择了C选项

67%的考友选择了D选项

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