实践是主观见之于客观的活动，实践的基本特征有（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28721' and id < 2342783 and id<>'2342783' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28721' and id > 2342783 and id<>'2342783' order by id asc limit 5