A、They can make them rich. B、They need more people to work for them. C、They need their money to do business. D、Some people win a

There are stock markets in large cities in many countries. Stock markets in Paris, London, Tokyo, Shanghai and New York are among the largest and most well-known. The stock market, also called stock exchange, is a place where people can buy or sell shares in a factory or company. And each share means certain ownership of a factory or company.
    Different people buy shares through the stuck markets. Some are rich, who want to get more money than they have. Others are not very rich, and buy shares to try to become rich. Still others buy shares as part of their plan to save money.
    Of course, investing money in the stock market is not the safest way to make money. No one can tell exactly whether the shares will be doing well. The factory or company may do badly. Then the shares or stocks will go down, and the investors will lose money. The stock may go up or down for a number of untold reasons. Everyone wants the stock to go up, but sometimes even if a factory or company does a good job, the stock may still go down.
    No wonder buying shares through the stock market is often compared to gambling. All are eager to make money by "gambling" in the stock market. Factories and companies that need money are pleased that so many people are willing to "gamble". Indeed, the stock market is an attractive and complex part of the business world.