问题
单项选择题
下列妊娠期母体生殖系统变化，正确的是（）。
A.妊娠晚期子宫呈不同程度的左旋
B.子宫血流量较非孕期增加3倍
C.子宫峡部在临产时被拉长至10cm以上
D.妊娠12～14周起子宫出现不规则无痛性收缩
E.卵巢在妊娠期仍有排卵功能
答案
参考答案：D
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下列妊娠期母体生殖系统变化，正确的是（）。
A.妊娠晚期子宫呈不同程度的左旋
B.子宫血流量较非孕期增加3倍
C.子宫峡部在临产时被拉长至10cm以上
D.妊娠12～14周起子宫出现不规则无痛性收缩
E.卵巢在妊娠期仍有排卵功能
参考答案：D
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