[答案]：A

[解析]：選項(xiàng)B一個(gè)法律主體一定是一個(gè)會(huì)計(jì)主體，而一個(gè)會(huì)計(jì)主體不一定是法律主體;選項(xiàng)C會(huì)計(jì)主體確定了會(huì)計(jì)確認(rèn)、計(jì)量和報(bào)告的空間范圍;選項(xiàng)D會(huì)計(jì)分期確立了會(huì)計(jì)確認(rèn)、計(jì)量和報(bào)告的時(shí)間范圍。

[該題針對(duì)“會(huì)計(jì)基本假設(shè)與會(huì)計(jì)基礎(chǔ)”知識(shí)點(diǎn)進(jìn)行考核]