利率的期限结构反映的相关关系是利率与债券的（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25444' and id < 2143251 and id<>'2143251' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25444' and id > 2143251 and id<>'2143251' order by id asc limit 5