连接世界两个工业最发达的地区，两岸拥有世界2/5的重要港口，80%的海洋货运的海上航线是( )。
A. 北太平洋航线
B. 苏伊士运河航线
C. 巴拿马运河航线
D. 北大西洋航线
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Mr. Smith had an unusual ______ : he was first an office clerk, then a sailor, and ended up as a school teacher.
A. profession
B. occupation
C. position
D. career
The word "southpaws" at the end of the passage means ______.
A. a boxer from the south
B. a politician from a southern state
C. a person with extraordinarily large hands
D. a left-handed person
The U.S. achieved its predominance after World War Ⅱ because ______.
A. it had made painstaking effort towards this goal
B. its domestic market was eight times larger than before
C. the war had destroyed the economies of most potential competitors
D. the unparalleled size of its workforce had given an impetus to its economy
As I'll be away for at least a year, I'd appreciate ______ from you now and then telling me how everyone is getting along.
A. hearing
B. to hear
C. to be hearing
D. having heard
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