个体行为活动的动力系统是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27582' and id < 2273431 and id<>'2273431' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27582' and id > 2273431 and id<>'2273431' order by id asc limit 5