When I came in, I found Lucy           by the window           to music.

A．seated; listening

B．seated; listened

C．seating; listened

D．seating; listening

室外架空燃气管道所用钢管(除镀锌钢管外)，在安装前所作的防腐处理方法是( )。

A．包扎聚乙烯粘胶带

B．刷环氧煤沥青一遍

C．刷环氧铁红防腐漆一遍

D．刷环氧铁红防腐漆两遍