The Rocky Mountains ______ " the backbone of the continent" and are considered young mountains of the same age as the Alps in Europe, Himalayas in Asia, and the Andes in South America.
【正确答案】
B
【答案解析】解析：句意：落基山脉被认为是“大陆的脊椎”，同时被认为是一座年轻的山脉，和欧洲的阿尔卑斯山、亚洲的喜马拉雅山、南美的安第斯山脉同龄。be regarded as被当做是……。be believed in被相信是。be taken for被误认为是……。be honored by被誉为……。故选B。