医疗不分贫富贵贱，要一视同仁，即使患者为娼妓也要视为良家妇女，不可不尊重。提出上述理念的是我国著名医家（）

A.扁鹊

B.张仲景

C.华佗

D.孙思邈

E.陈实功

Don't be afraid of asking for help _____ it is needed. [ ]

A. unless

B. since

C. although

D. when