民事法律行为可分为单方民事法律行为和多方民事法律行为。下列行为属于单方民事法律行为的有（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25044' and id < 2130786 and id<>'2130786' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25044' and id > 2130786 and id<>'2130786' order by id asc limit 5