单项选择题

It is one thing to locate oil, but it is quite another to _______ and transport it to the industrial centers.

A．permeate
B．extract
C．distinguish
D．concentrate
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单项选择题
This book is about how these basic beliefs and values affect important _______ of American life.
A．facets
B．formats
C．formulas
D．fashions
单项选择题
He suggested that we put the scheme into effect, for it is quite _______.
A．probable
B．sustainable
C．feasible
D．eligible
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