A.一 B.二 C.三 D.四
A.國(guó)有經(jīng)濟(jì) B.集體經(jīng)濟(jì) C.個(gè)體經(jīng)濟(jì) D.私營(yíng)經(jīng)濟(jì)
A.1/2 B.2/3 C.3/4 D.3/5