不等式 的解集是 ，则a＋b的值是 （    ） 

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15530' and id < 2638602 and id<>'2638602' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15530' and id > 2638602 and id<>'2638602' order by id asc limit 5