近代中国沦为半殖民地半封建社会的最主要原因是（   ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27280' and id < 2260656 and id<>'2260656' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27280' and id > 2260656 and id<>'2260656' order by id asc limit 5