通信管道与铁路钢轨（或坡脚）的最 * * 行净距离（）m。
A.2.0
B.1.0
C.0.5
D.1.5
参考答案：B
（1）五边形的内角和是______°；
（2）一个多边形的每一个外角都为36°，则这个多边形是______边形．
She was surprised to know that the doctor was __________ too much for the treatment he was giving her.
A．affording
B．costing
C．offering
D．charging
