在植物体内大量积累的元素必定是植物必需元素。(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='2632' and id < 197733 and id<>'197733' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='2632' and id > 197733 and id<>'197733' order by id asc limit 5