价格上涨时需求量也上涨的商品属吉芬商品。 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31470' and id < 2523438 and id<>'2523438' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31470' and id > 2523438 and id<>'2523438' order by id asc limit 5