单项选择题

符合雌激素生理作用的是（）
A、降低妊娠子宫对缩宫素的敏感性
B、使子宫内膜增生
C、使宫颈黏液减少变稠，拉丝度减少
D、使阴道上皮脱落加快

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单项选择题

人体睡眠分为快波睡眠和慢波睡眠。

A．对
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Fiedler would expect that the best leadership style was a function of ________.
A、leader-member relations, task structure, and position power
B、formal authority, production process, and personality of employees
C、chain of command, relationships, and power
D、type of organization, personality of leader, and education of employees