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※何謂經濟
Economics is the study of how human beings allocate scarce resources to produce various commodities and how those commodities are distributed for consumption among the people in society. The essence of economics lies in the fact that resources are scarce, or at least limited, and that not all human needs and desires can be met. How to distribute these resources in the most efficient and equitable way is a principal concern of economists. The field of economics has undergone a remarkable expansion in the 20th cent. as the world economy has grown increasingly large and complex. Today, economists are employed in large numbers in private industry, government, and higher education. Many subjects, such as political science and sociology, which were once regarded as part of the study of economics, have today become separate disciplines, although the study of any one generally implies a working knowledge of the others.
※各種經濟活動
121.各行各業(Industries)
123(A).士 Educator：
老師、
科學家、
畫家、
音樂家、
123(B).農 Farmer：
農夫、
123(C).工 Worker：
工人、
工程師、
123(D).商 Businessman：
商人、
123(E).醫 Medicine：
醫生、
護士、
褓母、
123(F).警 Police：
警察、
消防員、
123(G).其他 Others：
各行各業概論、
演藝人員、
司機、
偵探、
郵差、
122.交通工具 Transportation：
123(A).陸上交通工具 ：
汽車、
公車、
火車、
卡車、
腳踏車、
消防救護車、
123(B).海上交通工具 ：
船、
潛水艇、
123(C).空中交通工具 ：
飛機、
太空梭、
123(D).交通工具概論
123.經濟活動 Economic Activity：依不同的發生地點來介紹各種經濟活動。
123
市場、
餐廳、
124.數學與經濟Math & Economics：
數字與貨幣、
四則運算、
※相關主題
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