下列属于资源经济学的三大主题的是（ ):

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29534' and id < 2402460 and id<>'2402460' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29534' and id > 2402460 and id<>'2402460' order by id asc limit 5