He ________ his business after his graduation.[ ]
A. started
B. did
C. made
D. opened
答案:A
血栓性浅静脉炎发病多与下列哪项有关()
A.寒冻史
B.静脉注射史
C.吸烟史
D.居住地潮湿
E.以上都不是
关于高血钾的病因正确的有()
A.高钾性周期性瘫痪
B.肌肉分解
C.假性低钾血症
D.Ⅳ型肾小管酸中毒
E.使用非甾体类消炎药