题目

 Mr.Black loved his daughter Helen very much. Every day he spent all of his free time   36 with her. One night,he had much work to do,  37  couldn’t  play with his daughter. In order to(为了)keep her  38   , he found a map of the world in a magazine and cut it into pieces .When he 39   ,Helen  was running to him and began to play. Mr.Black said he had  40   time to play now. He told the girl to put the pieces of paper back together to a map of the world, and then they could play. About half an hour later,Helen came to her father and said ,“Okey,it’s  finished.C与直线l1：2x-y+3=0平行的直线l2，在y轴上的截距是-6，则l2在x轴上的截距为（　　）A．3B．2C．-3D．-2