溶血性链球菌感染常引起（）
A.假膜性炎
B.浆液性炎
C.出血性炎
D.蜂窝织炎
E.脓肿
参考答案：D
Look at the trouble we’re in. If only we _____ our teacher’s advice.
A. had taken B would have taken C. took D. have taken
月经周期提前7天以上，甚至10余天一行，并连续两个月经周期以上者为（）
A.月经先期
B.月经后期
C.月经先后无定期
D.痛经
E.闭经
