At the meeting, the old man _____ some good advice about bringing down the market price of housing.

A．came out

B．came about

C．came along

D．came up with

建设单位领取施工许可证后因故未能按期开工的，建设单位可向发证机关申请( )。

A．两次延期，每次不超过两个月

B．两次延期，每次不超过三个月

C．三次延期，每次不超过两个月

D．二次延期，每次不超过三个月