Advertising is a form. of commercial mass communication designed to【C1】______the sale of a

product or service, or a message on【C2】______of an institution, organization, or candidate for political office. Evidence of advertising can be found in cultures that existed thousands of years ago,【C3】______advertising only became a major industry in the 20th century. Today the【C4】______employs hundreds of thousands of people and【C5】______the behavior. and buying habits of billions of people. Advertising spending worldwide now【C6】______$350 billion per year. In the United States【C7】______about 6,000 advertising agencies help create and place advertisements in a variety of【C8】______, including newspapers, television, direct mail, radio, magazines, the Internet, and outdoor signs. Advertising is so commonplace in the United States that an average person may【C9】______from 500 to 1,000 advertisements in a single day, according to some【C10】______.

Most advertising is【C11】______to promote the sale of a particular product or service. Some advertisements,【C12】______, are intended to promote an idea or influence behavior, such as【C13】______people not to use illegal drugs or smoke cigarettes. These ads are often called public【C14】______ads. Some ads promote an institution, such as the Red Cross or the United States Army, and are known【C15】______institutional advertising. Their【C16】______is to encourage people to volunteer or donate money or services or【C17】______to improve the image of the institution doing the advertising. Advertising is also Used to promote political parties and【C18】______for political office.【C19】______advertising has become a key component of electoral【C20】______in many countries.

【C1】

A．elevate

B．advance

C．raise

D．promote