It is said the company will pay a famous singer to __________ their product.
                    举一反三
- 17. The club said that a memorial service would be held in due course for the famous singer and that a book of ________ would be available for fans to sign.
 - The ____________ of a product is the most important factor of a product.
 - Producer surplus is equal to: A: the difference between the highest market price consumers are willing to pay for a product and the minimum amount producers are willing to accept for that product. B: the difference between the market price consumers are willing to pay for a product and the actual price they pay. C: the price a producer receives for a product minus the marginal cost of production. D: the economic profit earned from the sale of a good, minus its marginal cost of production.
 - He is said _____ an excellent opera singer in his youth.
 - 下列抬头写法属于指示抬头的是______. A: pay to Company A only B: pay to company A, not transferable C: pay to A Bank, not negotiable D: pay to the order of Company A
 
