d-c2八个音节中，以下哪项的音级属于半音关系（ ）。[山东2020]

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31283' and id < 2510683 and id<>'2510683' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31283' and id > 2510683 and id<>'2510683' order by id asc limit 5