Wall Street is the name of a street in New York and very famous in the whole world. It is the financial(金融的)center of the USA, exerting(施加)a significant influence upon the world's economy. Hetty Green, who was born in 1835,was nicknamed the Wizard (奇才) of Wall Street. She became almost a legendary figure in Wall Street, because she made a lot of money buying and selling shares(份股)in companies. Hetty Green began making money when her father died and she inherited(继承遗产) all his money. By investing wisely, she soon built up her fortune to over 100 million dollars. However, she hated spending money on herself or on her family. Actually, she hated spending money on everything except buying shares. She was so mean that when her son Edward broke his leg, she would not send for a doctor. She did not want to pay a doctor's bill. She refused to send her son to a good hospital. Instead, shetook the boy to a free charity hospital. There he did not get very good treatment and, to save his life, he had to have his leg cut off. Still his mother would not pay for proper hospital treatment. She sent for a doctor who cut off the boy's leg in her living room. It's incredible(难以置信的), isn't it?