—Jenny, what would you like to eat for lunch, pizza, pasta or sushi?

—________ I have a good appetite.[ ]

A. Sounds good.  

B. You're so considerate.

C. It's up to you.  

D. It depends.

男，61岁，冠心病心肌病伴左心衰竭入院，应用洋地黄2周后出现频发多源性室性早搏。

患者在应用上述药物的基础上，仍有呼吸困难，故加用速尿治疗2周，呼吸困难好转，但病人无力，心电图短阵室速，首先考虑（）

A.低钾血症

B.低蛋白血症

C.低钠血症

D.低氯血症

E.低钙血症