A:benefiting from
B:convincing of
C:suspecting of
D:protecting from
“群龙得首自腾翔,路线精通走一行。左右偏差能纠正,天空无限任飞扬。”这首诗是朱德为纪念遵义会议而作。“群龙得首”是指遵义会议确立了谁在党中央的领导地位( )