下列各一元二次不等式中，解集为空集的是（　 ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15529' and id < 2638493 and id<>'2638493' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15529' and id > 2638493 and id<>'2638493' order by id asc limit 5