I had neither a raincoat nor an umbrella. That's why I _____  wait until the rain stopped.     [ ]

A. might                              

B. should    

C. ought to                            

D. had to

呋塞米的利尿作用机制是（）

A.抑制髓袢升支粗段稀释和浓缩功能

B.抑制远曲小管近端稀释功能

C.抑制远曲小管、集合管Na重吸收

D.对抗醛固酮的作用

E.增加心输出量而利尿