除去下列溶液中的杂质（括号内为杂质），选择试剂不正确的是

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21231' and id < 1845555 and id<>'1845555' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21231' and id > 1845555 and id<>'1845555' order by id asc limit 5