划分阶级的根本标准是（  ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='28460' and id < 2325013 and id<>'2325013' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28460' and id > 2325013 and id<>'2325013' order by id asc limit 5