单项选择题

Why are Boston and Chicago mentioned

A．To demonstrate the development of big cities.
B．To exemplify cities with and without mass transportation
C．To show mass transportation changed many cities.
D．To contrast their rate of growth and development.

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单项选择题

The writer in this article concludes

A．that the saving and spending patterns in Great Britain are better than those in America
B．that the consumers always expect the price to rise a bit at sessions
C．that maintaining stable prices is a correct business policy
D．that people's income and consumption level are interrelated

单项选择题

What is the function of mass transportation

A．It stimulated the development of real estate.
B．It causes the conflict between large cities and small cities.
C．It leads to well-planned urban sprawl.
D．It encourages the stability of urban life.