根据有关研究表明，教师期望可以通过（ ）来影响课堂气氛。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30659' and id < 2471434 and id<>'2471434' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30659' and id > 2471434 and id<>'2471434' order by id asc limit 5