下面哪一项不是选择学前儿童科学教育内容时应遵循的原则？（ )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27839' and id < 2287694 and id<>'2287694' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27839' and id > 2287694 and id<>'2287694' order by id asc limit 5