幼儿具体形象思维的工具是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31370' and id < 2515982 and id<>'2515982' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31370' and id > 2515982 and id<>'2515982' order by id asc limit 5