下列关于隐性课程和显性课程的说法，正确的有（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30347' and id < 2452781 and id<>'2452781' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30347' and id > 2452781 and id<>'2452781' order by id asc limit 5