单选题 Prices determine how resources are to be used. They are also the means by which products and services that are in limited supply are rationed among buyers. The price system of the United States is a very complex network composed of the prices of all the products bought and sold in the economy as well as those of a myriad of services, including labor, professional, transportation, and public utility services. The interrelationships of all these prices make up the "system" of prices. The price of any particular product or service is linked to a broad complicated system of prices in which everything seems to depend more or less upon everything else.
If one were to ask a group of randomly selected individuals to define "price", many would reply that price is an amount of money paid by the buyer to the seller for a product or service or, in other words, that price is the money value of a product or service as agreed upon in a market transaction. This definition is, of course, valid as far as it goes. For a complete understanding of a price in any particular transaction, much more than the amount of money involved must be known. Both the buyer and the seller should be familiar with not only the money amount, but with the amount and quality of the product or service to be exchanged, the time and place at which the exchange will take place and other factors. For example, when the payment will be made, the form of money to be used, the credit terms and discounts that apply to the transaction, guarantees on the product or service, delivery terms, and return privileges. In other words, both buyer and seller should be fully aware of all the factors that comprise the total "package" being exchanged for the asked-for amount o money in order that they may evaluate a given price.

单选题 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.

【正确答案】 B

【答案解析】[解析] 文章第一段告诉我们，各种不同的因素构成了价格体系，而价格体系内部诸多因素又相互依赖。第二段阐述价格的意义不仅仅是钱的数量，而且还涉及产品的质量、交换服务、时间和地点、信誉、折扣率、产品的保证、送货和返回的优惠等等。本题正确答案为B项。

单选题 According to the passage, which of the following is NOT a factor in the complete understanding of price?
A. Instructions that come with a product. B. The quantity of a product.
C. The quality of a product. D. Warranties that cover a product.

【正确答案】 A

【答案解析】[解析] 本题为唯一否定题，即细节题。从第二段第三句开始一直到结尾是对“价格”的解释。大概意思是：要全面理解交易过程中价格的意义，买卖双方要了解的不仅仅是钱的数量，而且还有产品的质量、交换服务、时间和地点等等。B、C和D三项都提到了，只有A项没有提到。因此，本题正确答案为A项。