如果复数 是纯虚数，则实数 的值为（  ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='24600' and id < 2111619 and id<>'2111619' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='24600' and id > 2111619 and id<>'2111619' order by id asc limit 5