流利说商务英语Level5 Unit2 Part5 Related Factors IMarket forecastA market forecast predicts how well a good or service will sell.Sellers use market forecasts to help determine how much supply to create.If a forecast is accurate, it will prevent a seller from having a surplus or shortage of goods or services.v Opportunity costOpportunity cost is what you must give up in order to do something.If someone decides to quit their job and go to business school, the opportunity cost would be losin
