_____ this is only a small town, it's crowded with tourists who come here all year round.[ ]

A. Since

B. Although

C. As though

D. Unless

采用排架支墙模时，其正确的施工操作方法为______。

A．立排架→扎铁→支排架模→支侧模

B．立排架→支排架模→扎铁→支侧模

C．扎铁→立排架→支排架模→支侧模

D．立排架→支排架模→支侧模→扎铁