The _______ are the backbone of the North American continent.
A.lifeline
B.North Island
C.Hawaii
D.second-largest
E.Rockies
F.1920s
G.Maori
H.eighth-largest
I.London
J.Peat
K.the Highlands
L
The _______ are the backbone of the North American continent.
A.lifeline
B.North Island
C.Hawaii
D.second-largest
E.Rockies
F.1920s
G.Maori
H.eighth-largest
I.London
J.Peat
K.the Highlands
L.northern
【正确答案】:E
【题目解析】:【考点点击】本题主要考查落基山脉。
【要点透析】落基山脉是美洲科迪勒拉山系在北美的主干,由许多小山脉组成,被称为北美洲的“脊骨”。P177
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