排卵期宫颈黏液出现（  ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25965' and id < 2177863 and id<>'2177863' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25965' and id > 2177863 and id<>'2177863' order by id asc limit 5