[解析]
Paragraph 1
What the old man said struck David.He suddenly realised that wealth the most important thing to the old man.What the old man really wanted was that he still enjoyed﹣his youth. (高分句型一) It was the most valuable thing he had.He realized that he was still young and everything was possible for him. David looked at the old man again and this time he no longeradmired him.He knew he still had chance to become rich.But the old man could never become young again.(老人的话让David意识到财富不是最重要的,而是青春)
Paragraph 2
David stopped complaining about his life.Instead he decided to make a change.Later he found work again.This time he worked hard and tried his best to learn new things in his free time.He even went to attend a course at a night school.Two years later,he found better work.And some years later.he started his own business.Finally,he became rich.But he knew that wealth wasn't the most important in his life.(高分句型二) He wanted to live life to its fullest.(David不再抱怨生活,而是积极改变自己的态度并乐观对待人生)