nickname is a shortened form of a person's name. A nickname also can be a descriptive name for a person, place or thing. Many American cities have nicknames. These can help establish an identity, spread pride among citizens and build unity. A few years ago, some marketing and advertising experts were asked to name the best nickname for an American city. The winner was the nation's largest city, New York. The top nickname was The Big Apple. You might wonder how New York got this nickname. In the early nineteen seventies, the city had many problems. The number of visitors was falling. So a campaign was launched to give the city a new image. The head of the New York Conventions and Visitors Bureau decided to call the city, The Big Apple. There are several explanations for where this name came from. Language expert Barry Popik studied the question and wrote about it on his Web site. He says John Fitz Gerald, a writer for a New York newspaper, used the name The Big Apple to mean New York in the nineteen twenties. Mister Fitz Gerald wrote about horse races. He heard the name used by men who worked at a racetrack in New Orleans, Louisiana. Mister Fitz Gerald wrote: 'The Big Apple. The dream of every lad that ever threw a leg over a thoroughbred and the goal of all horsemen. There's only one Big Apple. That's New York.' In horse racing, the expression meant 'the big time,' the place where large amounts of money could be won. The Big Apple became the name of a night club in the Harlem area of New York City in nineteen thirty-four. It also was the name of a popular dance and a hit song in the nineteen thirties. But it is not the only nickname for America's largest city. Barry Popik's web site lists almost one hundred nicknames that describe New York. The best known are The Capital of the World. Empire City. Gotham. The City So Nice They Named it Twice. And, The City That Never Sleeps. You can hear about the city in the song, 'New York, New York,' by Frank Sinatra. 小题1:Why do many American cities have nicknames?（回答词数不超过15个） 小题2:What did John Fitz Gerald write about for the New York newspaper?（回答词数不超过5个） 小题3:Besides “The Big Apple”, how many best known nicknames that describe New York are listed according to Barry Popik's web site?（回答词数不超过2个）