（多选题）旅行社与旅游者签订合同应就下列内容明确约定（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26602' and id < 2215841 and id<>'2215841' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26602' and id > 2215841 and id<>'2215841' order by id asc limit 5