采用问卷、访谈等方式搜集有关资料，进行分析研究的科研方法是 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25992' and id < 2181452 and id<>'2181452' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25992' and id > 2181452 and id<>'2181452' order by id asc limit 5