On one hand,it gives us place……powerful the China is!Better City,Better Life “Better City,Better Life” is the topic of 2010Wold Expo .How can we understand it?The answer to this question is that we can’t live without city.On one hand,it gives us place to live and food to eat.If our city become worse,what will our life become?On the other hand,if our city become better,more and more foreigners will come and visit our city,they will know how colourful the Shanghai is and how powerful the China is!So city is an important part in our life .But how can we prepare for the 2010World Expo?The most important thing is that we must keep city clean.As a student,we must work hard and get good mark in exam.So let's take action .Let's make our life more colourful.