下列地质地貌示意图中，主要由外力作用形成的是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19470' and id < 1685897 and id<>'1685897' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19470' and id > 1685897 and id<>'1685897' order by id asc limit 5