Only when _____ home_____ that he had left his bag in the taxi he had taken.[ ]

A. he returned; did he realize

B. did he return; did he realize

C. he returned; he realized

D. did he return; he realized

患者，女，65岁。反复咳嗽、咳痰、气促20年，心悸、水肿6年，近1周来症状加重入院。查体：呼吸急促，双肺可闻及干湿啰音，P2亢进，三尖瓣区闻及3/6级收缩期杂音。肝右肋下4cm，压痛（+），肝颈回流征阳性，下肢水肿。首选的治疗是使用（）

A.强心剂

B.利尿剂

C.心血管扩张剂

D.抗生素

E.祛痰剂