Her sister is a nurse and her job is to care for sick people.

A．look at

B．look up

C．look after

D．look for

患者有糖尿病史20年，小便量多，混浊如膏，腰膝酸软，形寒怕冷，面色黧黑，舌淡苔白，脉沉细无力，治疗应首选的方剂是（）

A.金匮肾气丸

B.七味都气丸

C.左归丸

D.六味地黄丸

E.血府逐瘀汤