题目

I go out to have a walk when they opened the door. A . am about to B . was about to C . went to D . have to 答案：B在郑州交会的两大铁路干线是（   ） A、京九线、陇海线          B、京广线、陇海线  C、陇海线、兰新线          D、京包线、包兰线