Speaker A: Yes, can I help youSpeaker B: ______

A．Thanks. I'm very grateful for your help.

B．We're just looking. Thanks.

C．Yeah, can you help me with this experiment

D．Yes. Can you tell me how to get to the National Library

不属于遗传性铁粒幼细胞性贫血为（）

A.多见于男性

B.常有家族史

C.遗传形式多为不完全X染色体性连锁隐性遗传，极少数为常染色体隐性遗传

D.大细胞性贫血

E.部分病例对吡哆醇治疗有效