使溴水褪色，发生取代反应的是                  （   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21809' and id < 1902008 and id<>'1902008' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21809' and id > 1902008 and id<>'1902008' order by id asc limit 5