(2009江苏南通调研) While income worry is _______ rather common problem of the aged, loneliness is another problem that ________ aged parents may face.

A．a; 不填

B．the; 不填

C．a; the

D．the; the

我国《海船船员发证规则》规定，适任船员应满足以下年龄要求：女性船员小于（）周岁，男性船员小于（）周岁。

A．55/60

B．55/65

C．60/63

D．60/65