单项选择题

Freight costs were reduced to 10% of what they had been because of ______.

A．the decline in taxes
B．the construction of the railroads
C．the construction of the Erie Canal
D．the development of industry
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单项选择题
Which of the following can be the best title for the passage
A．The Development of Transportation in New York.
B．Exports and Imports of New York.
C．How New York Became America's Largest City
D．How New York Exchanged with Europe
单项选择题
According to this passage ______.
A．Freud led a well-balanced life
B．workaholics can be helped
C．workaholics should be admired
D．so-called "normal" people are truly the sick people among us
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