The Backbone of North Atnerica refers to theA．Appalachian Mountains.B．Rocky Mountains.C．Ca

相关问题

• 1、The Backbone of North America refers to theA．Appalachian Mountains.B．Rocky Mountains.C．Cas
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• 2、The economic backbone of Canada includesA．fishing.B．tourism.C．agriculture.D．entertainment
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• 3、______is sometimes called the "backbone of England".A．The Sperrin MountainsB．The Cambrian
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• 4、______is（are)considered as "the backbone of the continent" in America and is（are) also kn
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• 5、The backbone of Canadas economy is______.A．forestryB．agricultureC．service industryD．manufa
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• 6、As the backbone of the North American continent ______is known as the Continental Divide
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