Jason was one of the engineers 1who came from Russia in the 1950s. When he came to China, the first thing 2that he did was to visit the factory 3which did research on buses.Then he spent every minute that he could spare to help China to develop transportation. Although Jason was a foreigner 4whose nation also needed him especially, he decided to make contributions to our country's development. Jason was really a person 5whom we ought to say thanks to.Jason was really a person 5whom we ought to say thanks to.