单项选择题

What can we infer from the first two sentences in the second paragraph

A．Producers can satisfy the consumers by mechanized production.
B．Consumers can express their demands through producers.
C．Producers decide the prices of products.
D．Supply and demand regulate prices.

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单项选择题

According to the passage, what is the characteristic of a private-enterprise economy

A．Private property.
B．Manpower and natural resources control.
C．Ownership of productive resources.
D．Free contracts and prices.

单项选择题

According to the passage, which statement is tree

A．If the product is in short supply compared with demand, the producers are unlikely to increase its production.
B．Producing more of a commodity results in elimination of parts of goods.
C．Consumers' demands actually control the 'price of the commodity.
D．Price may reflect the relationship between supply and demand directly.