“多一把衡量的尺子，就会多出一批好学生”的理论依据是（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32299' and id < 2569721 and id<>'2569721' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32299' and id > 2569721 and id<>'2569721' order by id asc limit 5