表演区里，教师和幼儿共同制作和收集了各种帽子、面具、头饰、假发、项链、乐器……这体现了 材料投放的 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26267' and id < 2198730 and id<>'2198730' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26267' and id > 2198730 and id<>'2198730' order by id asc limit 5