如果高水平的学生在测验项目上能得高分，而低水平的学生只能得低分，那么就说明( )高。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31008' and id < 2495934 and id<>'2495934' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31008' and id > 2495934 and id<>'2495934' order by id asc limit 5