_____ in thought, he sat at the edge of the bed, with his eyes _____ on the letter in his hand.

A．Lost; fixing

B．Losing; fixed

C．Lost; fixed

D．Losing; fixing

男性患者，48岁，痛风急性发作1天，不宜在急性痛风性关节炎期加用的药物是（）

A.别嘌呤醇

B.糖皮质激素

C.非甾体抗炎药

D.秋水仙碱

E.ACTH