已知a，b都是实数，那么“a2＞b2”是“a＞b”的 （  ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19880' and id < 1726057 and id<>'1726057' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19880' and id > 1726057 and id<>'1726057' order by id asc limit 5