【正确答案】 1、正确答案：Success is obtained by overcoming difficulties. Without difficulties, there is no success. If there is nothing worthy of our competition or struggle, it isn"t necessary to talk about success. Therefore, it is a good matter that people are often in a situation of continuous efforts. It is due to the need that we discover the major source of human progress— with no exception of the national progress and the individual progress. The need has emerged most of the brilliant modem inventions and improvements, stimulated the appearance of shipbuilders, traders, manufacturers, mechanics, retailers, artisans, and skilled workers and so on. It is the impetus of all departments—developing land resources of its own and other countries, fostering the quality of people who lived in this land. It roots deeply in mankind, which makes human beings try to seek out and get some better and more noble achievements continuously.