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Advertising has become a very specialized activity in modern times. In the business world of today，supply is usually greater than demand. There is great competition between different manufacturers of the same kind of product to persuade customers to buy their own particular brand. They always have to remind the consumer of the name and the quality of their product. They do this by advertising.
The manufacturer advertises in the newspapers and on posters. He sometimes pays for songs about his product in commercial radio programs. He employs attractive sales girls to distribute samples of it. He organizes competitions with prizes for the winners. He often advertises on the screens of local cinemas. Most important of all，in countries that have television he has advertisements put into programs that will accept them.
Manufacturers often spend large sums of money on advertisements. We buy a particular product because we think that it is the best. We usually think so because of the advertisements that say so. Some people never pause to ask themselves if the advertisements are telling the truth.
1. Advertising in the newspapers，radio programs and TV programs are equally important.
2. Advertisers try every means to win customers 'strong preference in their products.
3. Manufacturers tend to exaggerate their products 'merits in advertisements.
___1. False. The last sentence in Para. 2 mentions that advertising in television program is the most important of all.
___2. True. According to Para. 2，manufacturers advertise in public media or hire attractive girls to distribute the products 'samples and so on. The purpose of their advertising is to persuade customers to buy products of a particular brand（Line 3，Para. 1）.
___3. True. We can get the answer from the last paragraph，“ As buyers ， we always think the product is the best and some people seldom doubt if the advertisements are telling the truth .”
As introduced in Unit 1，skimming is used to quickly identify the main idea of a text. It is especially useful if you are used to reading everything in a foreign language word by word，as it allows you to sort out what is relevant quickly and thus use time effectively. According to some researchers，skimming is usually done at a speed three to four times faster than normal reading. People often skim when they have lots of material to read in a limited amount of time. For example，in reading a newspaper，rather than read it carefully page by page，you usually skim it first to find out if there is something valuable or interesting.
As with any skill，the more you practice the better you become. In addition to the strategies introduced in Unit 1，practice can be made in both increasing the speed of movement of your eyes and increasing the amount of text taken in at one time，that is，taking in two or more lines at one fixation. Moreover，as practice brings success，your confidence and motivation will also increase.