要求学生从备选项中选择或匹配正确答案，这种题型称之为 ( )的难度为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30773' and id < 2477783 and id<>'2477783' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30773' and id > 2477783 and id<>'2477783' order by id asc limit 5