10.  My grandfather is such a forgetful person that he has to __ many things, even his daily meals.

A．be remembered by

B．be reminded of

C．be memorized

D．be reminded

根据《造价工程师注册管理办法》的规定，经全国造价工程师执业资格统一考试合格的人员应当在取得考试资格证书后的有效期限内，持有关资料到省级或者部门注册机构申请初始注册，该有效期限为( )个月。

A．1

B．2

C．3

D．6