[填空题] Adervertising is a form of selling. For thousands of years, there have been (36)_____who tried to persuade others to buy the food they have (37) _____or the goods they have made or the services they can perform. Advertising (38) _____in the signs that merchants once put over their doors to (39) _____the public exactly what was for sale inside with (40) _____symbols or pictures. The objective of any advertisement is to (41) _____ people that it is in their best interests to take an action the advertiser is recommending. Advertising (42) _____to the content of the mass media, and at the same time, supports them. Most newspapers and magazines publishers, radio and television stations make their (43)_____from the sale of space or time to advertisers. As a matter of fact, (44)_______________. The cost of buying space or time is added to the price of an advertiser’’s goods or services. (45)_____________rather than providing better books, programs or magazine articles. Advertisi