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( )is the dividing line between the South and North of America.
A.The Hudson River
B.The Potomac River
C.The Ohio River
D.The Missouri River
B.The Potomac River
C.The Ohio River
D.The Missouri River
参考答案
参考解析
解析：考查美国的地理区划。阿巴拉契亚山脉位于大西洋沿岸平原西侧，基本与海岸平行，长约2 300多千米，一般海拔1 000～1 500米，由几条平行山脉组成。内地平原呈倒三角形，北起漫长的美国与加拿大边界，南达大西洋沿岸平原的格兰德河一带。西部山系由西部两条山脉组成，东边为阿巴拉契亚山脉，西边为内华达山脉和喀斯喀特山脉。西部山间高原由科罗拉多高原、怀俄明高原、哥伦比亚高原与大峡谷组成，为美国西部地质构造最复杂的地区。美国南北的分界线是密苏里河，东西的分界线是密西西比河。
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