题目

High school can be a terrible time if you get it all wrong. Find out how to survive (度过) high school with a few easy tips.Be Yourself. High school is a fun time to make new friends, meet new people and socialize. Just be yourself. Don’t give in to anyone’s wants.Keep Good Company. Choose your friends carefully and make sure you won’t get influenced by anyone. You will find friends, but stay away from the ones who don’t want to be your friends.Be Optimistic (乐观的). Always wear your smile. Treat others the way you want to be treated. Respect (尊敬) your teachers and classmates2010年3月，洛阳伊川县一煤矿发生特大瓦斯爆炸事故，人员伤亡惨重．（1）请从燃烧的条件着手分析这次爆炸发生的原因．（2）根据你所学的知识，简要的说说如何预防矿井内瓦斯爆炸．（答出2条即可）