单项选择题

What made recycling a major factor on the urban scene in 1970s

A．Financial viability in the 1960s.
B．Tax incentives and rapid depreciation.
C．Growing interest in ecology issues.
D．Both B and C.
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单项选择题
What is the main idea of the passage
A．During the 1970s, old buildings in many cities were recycled for modern use.
B．With government support, people could recycle old buildings.
C．Experts did quite a lot to fight urban decay.
D．Recycling old building became a reality in Boston in the 18th century.
单项选择题
What is the author's opinion of the San Antonio project
A．It is better than the other projects discussed.
B．It is a good project for other cities to follow.
C．San Antonio's leaders use other machines instead of bulldozers.
D．The work done on the river was more meaningful than the work done on the buildings.
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