近几年来，平板电脑的销量持续下跌，逐渐被大屏手机所替代，这是因为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31518' and id < 2523818 and id<>'2523818' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31518' and id > 2523818 and id<>'2523818' order by id asc limit 5