已知方程 （ a>0, a≠1）有两个不等实根，则 a的取值范围是（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='17277' and id < 1456724 and id<>'1456724' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='17277' and id > 1456724 and id<>'1456724' order by id asc limit 5