A.20% B.30% C.40% D.50%
A.農(nóng)業(yè)社會(huì)B.經(jīng)濟(jì)主義C.科技社會(huì)D.社會(huì)主義
A.相輔相成B.激烈競爭C.各自為謀D.相互羈絆