Today, I read a article that is avalanche. It is one of disasters in our world. It can desetory our city and also can erasily take someone's life. Avalanches kill more than 150 people worldwide each year. Most are snowmobilers, skiers, and snowboarders. So we must pay attention to Avalanche. Disastrous avalanches occur when massive slabs of snow break loose from a mountainside and shatter like broken glass as they race downhill. These moving masses can reach speeds of 80 miles (130 kilometers) per hour within about five seconds. It is very fast. We can not have any life chance. So if you want to skip snow, you must tell your parents, friends and locial people. Once some places happened avalanche, those people can recure you as soon as possible.

http://environment.nationalgeographic.com/environment/natural-disasters/avalanche-profile/