已知=2+i，则复数z=（  ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='24593' and id < 2110621 and id<>'2110621' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='24593' and id > 2110621 and id<>'2110621' order by id asc limit 5