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【单选题】
某县该年活产数12 500例，上报孕产妇死亡7例，其中1例孕35心衰，3例产后24小时内大出血，2例产后10天内产褥感染，1例产后38天不明原因坠楼，该县该年孕产妇死亡率应该是
A.
48/105
B.
56/105
C.
64/105
D.
70/105
E.
72/105
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