以正常月经周期28日为例，顶浆分泌开 始于（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25954' and id < 2176683 and id<>'2176683' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25954' and id > 2176683 and id<>'2176683' order by id asc limit 5