企业管理费的取费基数不包括( )。
A．以直接费为计算基础B．以机械费为计算基础C．以人工费为计算基础D．以人工费和机械费合计为计算基础
参考答案：B
______ the housing price, several measures have been adopted in the last two years. [ ]
A. Lowering
B. Having lowered
C. To lower
D. To have lowered
