单选题
______, known as the backbone of the North American Continent, is also called the Continental Divide.
A、
The Rockies
B、
The Appalachian Mountains
C、
The Blue Mountains
D、
The Great Smoky Mountains
【正确答案】
A
【答案解析】
解析:落基山脉是北美大陆的脊梁,也被称为大陆分水岭。
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