A.一 B.二 C.三 D.四
A.國有經(jīng)濟(jì) B.集體經(jīng)濟(jì) C.個體經(jīng)濟(jì) D.私營經(jīng)濟(jì)
A.1/2 B.2/3 C.3/4 D.3/5