下列化合物中，含有共价键的离子化合物是

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21371' and id < 1853806 and id<>'1853806' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21371' and id > 1853806 and id<>'1853806' order by id asc limit 5