------I didn't mean ______ my mother.

------But talking to her like that meant ______ her.

A．hurting; hurting

B．to hurt; hurting

C．hurting; to hurt

D．to hurt; to hurt

关于海洋性贫血描述正确的是（）

A.发病机制是珠蛋白肽链结构异常

B.发病主要见于我国东北部

C.为大细胞低色素贫血

D.轻型贫血一般不需治疗

E.治疗需要补充铁剂