中考英语什么是站群优化？作文：自然灾害

　　As we know, our country suffered heavy ice early 2011. Everything was covered with freezing rain. Guizhou, Hunan and Sichuan suffered the most. It caused the buses, trains and planes stop service. The disaster destroyed power facilities, cutting power supplies in many areas. As a result, huge economic loss was caused. Many people could not work and live normally. There was no food, water or light in some places. Our government called on people to fight against heavy snow. As a student, I think we should learn from those heroes. We must study hard at school. We should learn all kinds of knowledge to make our motherland stronger, better and richer.