【题目】The price system is a complex network composed of the prices of all the products bought and sold in the economy as well as of a great number of services.
A.the one
B.that
C.one
D.those

【答案】D
【解析】主要测试代词辨析。此处：those代指上文：the prices，故此选择：D。句子译文：价格系统是一个复杂的网络，它包括经济方面所有被买进和出售的产品的价格以及大量服务项目的价格。that指不可数或单数；one指同类中的一个