第一篇 经济学导论 单元测验1：第一篇（ 经济学导论）
1、 Microeconomics is often called
答案: price theory.
2、 Society faces trade-offs because of
答案: scarcity.
3、 The purpose of making assumptions in economic model building is to
答案: simplify the model while keeping important details.
4、 Which of the following is true?
答案: Efficiency refers to the size of the econo