已知函数 ，若 f[ f( x)]＝2，则 x的取值范围是（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16565' and id < 1441203 and id<>'1441203' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16565' and id > 1441203 and id<>'1441203' order by id asc limit 5