The Backbone of North America refers to theA．Appalachian Mountains.B．Rocky Mountains.C．Cas

相关问题

• 1、Which of the following is NOT a part of Canadian Constitution？A．British North America Act
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• 2、The advantage of the educational system in North America is that students learn to thi
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• 3、______is（are)considered as "the backbone of the continent" in America and is（are) also kn
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• 4、As the backbone of the North American continent ______is known as the Continental Divide
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• 5、The Backbone of North Atnerica refers to theA．Appalachian Mountains.B．Rocky Mountains.C．Ca
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• 6、The richest agricultural region of America is ______.A．the Middle WestB．the North EastC．th
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