A.經(jīng)濟(jì)學(xué)家們有時(shí)對(duì)經(jīng)濟(jì)的適當(dāng)模型意見(jiàn)不一致；
B.經(jīng)濟(jì)學(xué)家們有時(shí)對(duì)經(jīng)濟(jì)的適當(dāng)模型意見(jiàn)一致，但對(duì)與模型相關(guān)聯(lián)的特定數(shù)量不一致；
C.經(jīng)濟(jì)學(xué)家們有時(shí)對(duì)實(shí)證經(jīng)濟(jì)學(xué)和規(guī)范經(jīng)濟(jì)學(xué)的區(qū)別意見(jiàn)不一致；
D.經(jīng)濟(jì)學(xué)家們有時(shí)對(duì)公平與效率的相對(duì)重要性意見(jiàn)不一致。