Thepricesystemisanetworkconsistingofthepricesofallthep...

问题详情：

 The price system is a network consisting of the prices of all the products bought and sold as well as ________ of a great number of services.

   A. that                    B. those                 C. the one              D. what

【回答】

B

知识点：代词

题型：选择题