Hidden Troubles for the US Economy 　　There are three hidden troubles facing the US economy, which will affect the confidence of the US consumers and obstruct the development of the US economy, some experts predicted. 　　Following are these troubles: 　　First, the profit of some big companies, such as the Coca Cola, might decrease or cannot match Wall Street's expectations, which will directly influence the stock market. 　　Second, the rise of the labor cost will affect the profit of companies. 　　Third, the unemployment rates might increase this year. 　　 WorldNews 1999-01-05 Page7