Kai-Fu Lee is one of the most successful of Chinese professional managers．He worked for big companies such as Apple, Microsoft and Google．Now he works for himself and he also writes some books．Behind each of his choices is his belief that you should “lead your life” rather than “live your life”． He made his first big life decision in 1990．He was then the youngest associate（副的）professor of Carnegie Mellon University．If he had stayed a little longer, he would have become a tenured（终身职位的）professor．But he decided to join Apple．There, he led his team to many hi-tech miracles（奇迹的）, such as the iPod and the iPhone which changed the world using hi-tech．In 1998, he left Apple for Microsoft and started up Microsoft Research China which is now called Microsoft Research Asia．Because of his effort, it becomes one of the best labs in the world．In 2005, he moved on again, to Google．In his four years there, Google’s market share in China jumped from 16% to 30%． Now, he has started his own company “Innovation Works”．He aims to help new Chinese companies in mobile computing and e-commerce（电子商务）and also help China’s young people start up their own business．Young people can send their business ideas to the company．If Lee likes an idea he receives, his company will help to turn the idea into a business． Lee has written several books．His “Be Your Personal Best” is a bestseller．His autobiography “Making a World of Difference; the Kai-Fu Lee Story” tells the story of Lee’s many successes but also setbacks on the way to becoming a technology and business giant． 49．The article is mainly about_______． A．how the belief “lead your life” made Lee’s life different. B．how Lee kept changing his jobs to become successful. C．how talented Lee is in hi-tech and business. D．how Lee started up his own company. 50．How many times has Lee changed his jobs? A．Four           B．Five           C．Six           D．Seven 51．Which of the following statements about Lee is TRUE? A．He left the University because he had to wait long to be a tenured professor B．He hopes his company can help young Chinese people build their own business C．He left Microsoft for Google because he wanted more market share D．He wants to get more money and fame from his books 52．The writer’s purpose of writing thelast paragraph is________. A．to introduce Lee’s books to us B．to tell us more about Lee’s talent C．to raise our interest to buy Lee’s books D．to show another example of Lee’s “leading your life”