I don't have a sister ____________ brother. [ ]
A. and
B. or
C. a
答案:B
其处理首选哪项()
A.25%硫酸镁肌注
B.静滴催产素引产
C.安定促宫颈口扩张
D.剖宫产:终止妊娠
E.等待自然分娩
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