Mum, you really need to have a rest! You      in the kitchen ever since you came back home three hours ago.

A．had worked

B．were working

C．have been working

D．worked

康复医学的特点（）

A.发展功能代偿

B.达到全面康复的目的

C.进行功能替代

D.促进患者回归社会

E.集康复评定、康复治疗、康复预防及康复治疗组的工作方法等为一体的全面医学