BeijingTimesreportedtheregulation,_

发布时间：2020-07-25 15:08:21

Beijing Times reported the regulation, _____, would take effect on Jan．1, 2012．A.if passingB.if passedC.if it passedD.if it being passed

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B解析考查省略结构。if passed = if it was passed，如果被通过，选B。
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