题目内容
(请给出正确答案)
[单选题]
文章见教材第55页 UNIT3 Passage one 1. What is the main purpose of the passage?
A.To outline contrasting types of economic systems.
B.To explain the science of economics.
C.To argue for the superiority of one economic system.
D.To compare barter and money-exchange system.
答案
To outline contrasting types of economic systems.
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