—Have you heard of the songs sung by the first lady---Peng Liyuan?

—Of course! ___________ beautiful voice she has!

—I agree.

A．What

B．What a

C．How

D．How a

按照现行相关法规规定，公路工程的安全措施费不少于投标报价的( )。

A．3%

B．2%

C．1%

D．0.5%