听力原文： Some people dream of being President of the United States. Some dream of becoming stars in a Hollywood movie, and others of making millions of dollars overnight. But, could a dream like that come true in real life? Well, it did happen to Peter Johnson. Peter was an auto mechanic. One day, he walked into the Union Trust Bank in Baltimore and took 5,000 dollars that did not belong to him. The guards and other employees stood back and let him stuff the bills in his shirt and pants without trying to prevent him from taking the money. No one tripped an alarm. No one pulled a gun. No one called the police. Why did they allow him to get away with it?Well, everything was legal. Peter had won a contest promoted by a Baltimore radio station. The first prize entitled him to enter the Union Trust Bank and gather up as much money as he could lay his hands within five minutes. Because he could not bring any large bags or boxes into the bank, all the money had to be placed in his pockets.As the time went by, Peter ran about wildly, trying to pick up as many large bills as he could find. When his time was up, he was out of breath, but was ＄5,000 richer.Why did Peter go to the Union Trust bank?