_______ you start eating in a healthier way, weight control will become much easier.

A．Unless

B．Although

C．Before

D．Once

人工拆除建筑物的顺序应按（）依次进行拆除。

A、板；非承重墙；梁；承重墙；柱

B、板；梁；非承重墙；承重墙；柱

C、板；非承重墙；梁；柱；承重墙