[单项选择]47岁妇女,14岁月经初潮,既往月经规律,周期28-~30日,持续5日,近一年月经周期不规则,20~35日行经一次,持续7~12日干净;经量多,每次需用卫生巾两包。目前该妇女的卵巢状况为() A. 卵巢功能属于成熟阶段 B. 常为有排卵性月经 C. 卵巢内卵泡已耗竭 D. 卵巢内剩余卵泡完全丧失对垂体促性腺激素的反应 E. 卵巢内卵泡数明显减少且易发生卵泡发育不良
第13题: [单项选择]After reading this passage, you can conclude that ______. A. mountain building is a rare occurrence B. mountain building is going on all the time C. many people die in earthquakes every year D. mountain climbing is an excellent extreme activity 参考答案:B 答案解析:从该文章所表达的意思中可以得出结论,山脉的形成是始终在进行之中的。