根据儿童保健常规，对3〜6岁学龄前儿童 每年查体次数应是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25381' and id < 2139287 and id<>'2139287' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25381' and id > 2139287 and id<>'2139287' order by id asc limit 5