—Dad forgot to mail the letter again.

— ______. Mum is always complaining about his declining memory.

A．What a pity

B．Never do it again

C．I’m with you on that

D．That’s just typical

我国现阶段采用的围生期规定为（）。

A.从胚胎形成至产后1周

B.从妊娠满20周至产后4周

C.从妊娠满24周至产后1周

D.从妊娠满28周至产后1周

E.从妊娠满28周至产后4周