小学生在课间玩耍时不小心扭伤了脚踝，教师首先应采取的措施是 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26613' and id < 2216602 and id<>'2216602' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26613' and id > 2216602 and id<>'2216602' order by id asc limit 5