第33题: [单项选择]What determines the price of a good in a market economy A. The cost of all elements in production. B. The cost of not making other goods. C. The efficiency of the manufacturing process. D. The quantity of materials supplied. 参考答案:A 答案解析:细节归纳题 文章第三段“In a market economy the price of a good and the quantity supplied depends on the cost o