LESSON few thousand years ago, man ’s life was rough and simple , their wants would have been confined to the basic necessities of life----food 、 clothing and shelter. ten nomadic tribes of North Africa moved to the river at the foot of the mountain in search of the source of water and new pastures. than 30 years ago ,the villagers often bartered eggs for needles 、 threads and stationary needed by children. merce embraces all kinds of economic activities such as: trade 、 transportation 、 communication 、 storage 、 banking 、 insurance and advertising etc. fast-food eases day-to- day cooking of house wives. L2 is the exchange of goods and services between buyers and sellers . It is an essential part merce and also a basis of it. paying premium to the pany ,you can ’t pensation in the event of economic losses. the event ofa surplus of goods , they can be sold at lower price. of higher price of raw material , the manufacturers are unwilling to venture to produce the goods. 5.“ The lower the price is, the more the selling is” isnot always right. L3 person , each country should use , to the best advantage , the peculiar skills and resources and specialize in producing and selling those goods that they can produce at relatively lower cost. Middle-east countries produce and export oil rather than produce food and
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