教师的职业是出卖知识的职业，师生关系是推销员和顾客的关系。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32195' and id < 2565918 and id<>'2565918' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32195' and id > 2565918 and id<>'2565918' order by id asc limit 5