使子宫肌纤维松弛并使妊娠子宫对缩宫素敏感性降低的激素是
A．人绒毛膜促性腺激素B．人胎盘生乳素C．雌激素D．孕激素E．前列腺素
参考答案：D
Betty will ring me up as soon as she ______ in Beijing.
A．arrive
B．arrives
C．arrived
D．will arrive
血浆置换的适应证在血液系统有哪些疾病?(3个以上)
