They didn't go to bed ______ they finished their homework. [ ]

A. until

B. because

C. when

D. if

男，45岁，肝硬化3年，查体有少量腹水，患者应用利尿剂，宜首选（）

A.甘露醇

B.安体舒通

C.利尿酸钠

D.双氢克尿噻

E.速尿