单项选择题

What is the passage mainly about

A．Energy crisis.
B．Water as a possible solution to energy crisis.
C．History of the use of water as a source of work energy.
D．Properties of water.
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单项选择题
According to Inglehart the frugality phenomenon________.
A．was an old phenomenon in the disguise of a new cloak
B．indicated a turn of people's attention to the quality of life
C．began to be noticed in the industrialized world during the '50s and '60s
D．was less visible because people didn't want to be accused of resisting the tradition
单项选择题
By saying ... were being joined by flow of converts the author implies that American consumers ________.
A．believed in a particular religion
B．were reluctant to change their established belief in materialism
C．accepted one kind of political principle
D．gradually began to accept a belief of simplicity
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