孕20周时，胎儿体内的卵母细胞最多， 达到（  ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25960' and id < 2177319 and id<>'2177319' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25960' and id > 2177319 and id<>'2177319' order by id asc limit 5