The structure of history course in senior middle school of China has broken through a singular required-course system and has formed the curriculum system of required courses plus electives.
我国高中历史课程结构已突破单一的必修课程体系，形成了必修加选修的课程体系。
The structure of history course in senior middle school of China has broken through a singular required-course system and has formed the curriculum system of required courses plus electives.
我国高中历史课程结构已突破单一的必修课程体系，形成了必修加选修的课程体系。
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