In the United Slates the Great Lakes are the economic _______ of the Midwest.
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】：A
【题目解析】：【考点点击】本题主要考查美国的五大湖。
【要点透析】美国的五大湖是中西部地区的经济命脉。P178
