Directions: Listen carefully and fill in the blanks with the words or phrases you’ve heard.

　　The conduct of negotiation on sales of goods is around the main               of the contract. The buyer shall discuss with several foreign companies simultaneously or separately in              business. Due to the status differences of the two parties, generally the seller shall discuss the export business on the               of analyzing the relation between supply and demand in international market, making proper strategic objective, to achieve the                results.