出版社：Canadian Research & Development Center of Sciences and Cultures
摘要：From the last century, the physics and chemistry stand in the main position for society development, there is a ward, Learn science around the world are not afraid. As time progresses, things have changed, the economy has leading the role. The most vital thing cared by the government is the economy. Key words: Economics; Principles of economics; Unemployment rate
其他摘要：From the last century, the physics and chemistry stand in the main position for society development, there is a ward, Learn science around the world are not afraid. As time progresses, things have changed, the economy has leading the role. The most vital thing cared by the government is the economy. Key words: Economics; Principles of economics; Unemployment rate
关键词：Economics;Principles of economics;Unemployment rate
