单项选择题 患者，男性，72岁。排尿困难5年，近2个月加重伴食欲缺乏。直肠指诊前列腺明显增大，5cm×6cm，叩诊示膀胱已达脐下3横指。血BUN36mmol／L，Cr340μmol／L，B超示双肾中度积水。下面哪一种治疗最为合理（）

单项选择题 听力原文：After he qualified as a doctor, his friends set him up in a practice of his own.What does the speaker mean?A．He cooperated with his friends and set up a business together.B．He was given a lot of advice by his friends in setting up his own business.C．His friends gave him much financial support in setting up his own business.D．His friends encouraged him to set up his own business.

未知题型 患者，男，41岁。腰痛伴右下肢放射痛3个月，反复发作，与劳累有关，咳嗽或用力排便时可加重疼痛。查体：右腿抬高40°时直腿抬高试验阳性，加强试验阳性。X线片示：L4～5椎间隙变窄。最可能的诊断为