题目内容
月经的发生是由于()
2021-11-30
A.血液中前列腺索浓度降低
B.血液中孕酮和雌二醉水平下降
C.卵泡剌激索和黄体生成索浓度升高
D.血液中孕酮水平升高,雌二碎水平下降
E.血中人绒毛膜伲性腺激素浓度升商
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