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.

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单项选择题

According to the passage, the price system is related primarily to （）

A．labor and education
B．transportation and insurance
C．utilities and repairs
D．products and services

单项选择题

The paragraph following the passage most likely discusses （）

A．unusual ways to advertise products
B．types of payment plans for service
C．theories about how products affect different levels of society
D．how certain elements of a price "package" influence its market value