【多选题】The spirit of the Yimeng old revolutionary base area can be summarized as:沂蒙精神的内涵为: A.
Loving the Party and the people’s army 爱党爱军 B.
Engaging in pioneering work 开拓奋进 C.
Arduous struggle 艰苦创业 D.
Making a selfless contribution 无私奉献