We don’t care about how Obama won the Nobel Peace Prize but _______matters for us is ______he will make his effort to bring a peaceful world to us. （原创）

A．that; how

B．which; whether

C．it; that

D．what ; whether

路基工程施工安全管理范围包括( )。

A．土方施工

B．石方施工

C．爆破作业

D．沥青路面工程的安全管理

E．机械作业