How science changes our lifes? With the development of society ,science has certainly changed our lives .Science has an influence on our lives,having bad effects and good influences .Nuclear weapons ,for example,can strengthen the national defense ,resisting foreign invasion .However ,they have a lot of damage and radiation.A coin has two sides,so does science .For science's progress ,transport has a lot of development .Car ,airplane,ship all make us closer and closer.The bad thing is that they also produce large pollution . It's sure that science has changed our lives ,though we can't make sure that it changes our lives for better .We can't be against science's development ,so the only thing we can do is that we should avoid more mistakes.

My university life I am a freshman.I am curious about my future life.I can't be lost in study but i really want to learn new konwledge.I don't konw how i can do.I am always busy with doing unmeaningfulthings.This makes me painful.I am looking for an encouragement to urge me to get improvement.