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单项选择题

23（）

A．encouraged
B．backed
C．discouraged
D．taken

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单项选择题What is the best title for the passage

A．The Inherent Weaknesses of the Price System.
B．The Complexities of the Price System.
C．Credit Terms in Transactions.
D．Resource Allocation and the Public Sector.

单项选择题32（）

A．comprehensive
B．intensive
C．extensive
D．wide