第3题: [单项选择]Where does this conversation probably take place A. In a department store. B. In a bank. C. At a post office. D. At a hotel. 参考答案:C 答案解析:[听力原文] M: Good morning. May I help you W: Could you deliver this package to London, and give
第27题: [单项选择]黄体功能不全诊刮最佳时间( ) A. 月经干净3天 B. 月经前3~7天 C. 随时 D. 月经第5天 E. 月经前14天 参考答案:B 答案解析:[解析] 卵泡期孕激素量极微,排卵后,随黄体发育分泌量显著增加,至排卵后7~8天达高峰。(月经前7天左右)孕激素使子宫内膜发生分泌期变化,此后逐渐降低至月经前的最低水平,内膜脱落出血。因此,在月经前3