All the following belong to the Viking’s achievement EXCEPT ______.

参考解析：

细节理解题。根据文章第二段第一句“In 930 AD, a group of men gathered at Thingvellir and founded their own government, which is today the world’s oldest parliamentary system”可知，公元930年，一群人聚集在辛格维利尔，建立了他们自己的政府，这是当今世界上最古老的议会制度，因此排除A项；根据文章第二段第二句“While the rest of Europe was suffering, Leif Eriksson was exploring North America and the great storytellers of Iceland were writing down the epic poems, which are to this day the foundation of Iceland’s history”可知，当整个欧洲都在遭受苦难时，Leif Eriksson正在探索北美，冰岛伟大的叙事家们正在记录史诗，这些史诗至今仍是冰岛历史的基石，因此排除B项；C项表述错误，不符合文意；根据文章第二段第三句“Perhaps the most extraordinary thing about Iceland’s past, however, is that it is still alive in the language, which has been unchanged for 1,000 years”可知，也许冰岛过去最不寻常的事情，就是它的语言仍然活跃，这种语言已经保持了1000年，因此排除D项。故选C。