1.Economics studies those aspects of human behavior relating to working, producing goods, distributing them, and consuming them.
　　经济学是研究人类商品生产、分配以及消费行为的科学。

　　2.Because of scarcity, each of us is forced to make choices.
　　由于资源稀缺，我们被迫作出选择。

　　3. Society's problem is a scarcity of resources-the things we use to make goods and services.
　　社会问题就在于我们用来制造商品及劳务的资源是稀缺的。

　　4. Microeconomics studies the behavior of individual households, firms and governments, the choices they make, and their interaction in specific markets and industries.
　　微观经济学所要研究的是个人、企业和政府的行为，当他们在作出选择时在既定的市场和行业中的相互影响。

　　5. Total production of every good or service will be greatest when individuals specialize according to their comparative advantage.
　　根据比较优势原则，当每个人专职从事某种商品生产或服务时，总产出将会最大。