从确定早孕开始，正常产前检査次数应是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='31465' and id < 2521382 and id<>'2521382' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31465' and id > 2521382 and id<>'2521382' order by id asc limit 5