Operations which left patients ______ and in need of long periods of discovery time now leave them feeling relaxed and comfortable.

A．exhausted

B．unhealthy

C．upset

D．fearful

当妊娠危及胎儿母亲的生命时，可允许行人工流产或引产，这符合（）

A.行善原则

B.不伤害原则

C.公正原则

D.尊重原则

E.自主原则