经腹部超声观察胎儿的肾脏，最早的时间是（     ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25733' and id < 2163123 and id<>'2163123' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25733' and id > 2163123 and id<>'2163123' order by id asc limit 5