求英语口语回答对话的形式.what the difference between hard work and smart

1 Hard work is work that requires both physical and mental strength,taking much of your time,the result of which may not be a satisfactory one.Smart work is work that is made easy with or wihout the aid of modern facilities and brings you satisfaction.
2 Because it has always been my dream to see what it is that makes America a great changing force in the world and,besides,I want to see with my own eyes how the Americans live,work or study.