If you are an athlete, strong abdominal muscles help you ensure a strong back and freedomfrom iryury during  upper-body movement.

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29675' and id < 2411523 and id<>'2411523' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29675' and id > 2411523 and id<>'2411523' order by id asc limit 5