从方位知觉的发展顺序来看，（ ）就能够辨别前后。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28331' and id < 2318518 and id<>'2318518' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28331' and id > 2318518 and id<>'2318518' order by id asc limit 5