填空题 Advertising is important to companies because no company can make a (1) on any product unless it advertises it first in the (2) . There are three categories of media: print, broadcast and (3) . The print media consist of newspapers and (4) . Newspapers ads can reach large numbers of people, but they are not very (5) or glamorous. Magazine advertisement allows a business to direct its ads to the people who are most (6) in the product, but it can be very expensive. The broadcast media include (7) and television. Of all the media, television is the most dramatic, so television ads easy to (8) .
What's more, almost everybody watches TV, and most TV programs are broadcast (9) . TV ads are viewed by millions of people all over the country. TV advertisement is enormously (10) .
The most common direct medium is the (11) . The advantage is that the ad goes directly in the (12) customer's hands. But these ads are often called " (13) mail", and are thrown away without being (14) .
Another direct medium is (15) , those huge signs on the street. The message on billboards is (16) , but it has to be very (17) . The third type of direct medium is signs and (18) , which are usually used in point of purchase advertising and can be found in (19) and shop windows. The advantage is that they are (20) .