1．Electrical Fire Safety TipsOn any given day，it's likely that most people use several different electrical devices（装置）．With electric devices being so common in modern homes，it's easy to forget that there are very real risks and angers associated with their use．Take the time to go over the rules of safe operation and make sure that everyone in your home is aware of them in order to prevent unnecessary exposure to harms and safety risks．
When an electrical short or spark does happen，it is very important to understand what to do to prevent or put out an electrical fire to keep the damage from spreading．You should，of course，call 911or other appropriate emergency services immediately in case of electrical injury or fire．The United States Fire Administration （USFA） of the Federal Emergency Management Agency （FEMA） offers a number of tips for preventing electrical fires．
◎Do not allow children to play close to small or large electrical devices．
◎Replace any tools that send out even slight electric shocks．
◎Replace any light switches that have a tendency to flash．
◎Replace any light switches that are hot to the touch．
◎Avoid overloading extension cords，sockets and plugs．
◎Do not force a three-prong plug into a two-receptacle socket．
◎Know where fuse（保险丝）boxes and circuit（电路）breakers are located as well as how to properly operate them．
◎Never attempt electrical repairs or rewiring'without proper Certification and experience．
◎Do not put water on an electrical fire； use a dry fire extinguisher（灭火器）or baking soda instead．
Even though electricity is ordinary，there is still quite a bit of danger associated with improper use．Carefully observe all safety measures when using electricity to keep yourself and your family safe．
21．Why is it easy to ignore the dangers of electricity？B
A．It is safe enough at homes．
B．People are too familiar with it．
C．People know well how to use it．
D．Few people know the safe rules．
22．What does Paragraph 2 mainly talk about？D
A．What to do to keep your home safe．
B．When to call a fire station for help．
C．How to avoid electricity failures at home．
D．How to deal with electricity failures correctly．
23．When should you change your switch for a new one？A
A．It feels hot．
B．It is at the reach of your kid．
C．It is not the most advanced one．
D．It doesn't have a long power line．
分析 本文是一篇广告布告类阅读．文章主要介绍了用电安全的问题．简单介绍了人们容易忽略电的危害的原因，如何正确处理停电问题等．作者还给出了一些安全用电的建议．
解答 21-23 BDA
21．B．细节理解题．根据"With electric devices being so common in modern homes，it's easy to forget that there are very real risks and angers associated with their use"可知人们容易忽略电的危害是因为人们对它太熟悉了．故选B．
22．D．段落大意题．根据"When an electrical short or spark does happen，it is very important to understand what to do to prevent or put out an electrical fire to keep the damage from spreading．"可知第二段主要讲述的是如何正确处理停电问题．故选D．
23．A．推理判断题．根据"Replace any light switches that are hot to the touch．"可知当开关发热的时候你就应该换个新的啦．故选A．
点评 本文是一篇广告布告类阅读．文章主要介绍了用电安全的问题．此类题型主要考查学生的细节理解和推理判断能力．细节理解题是针对文中某个细节、某句话或某部分具体内容设置问题，所以在做细节理解题时要结合原文和提干有针对性的找出相关语句进行仔细分析，再结合选项选出正确答案．在做推理判断题时不要以个人的主观想象代替文章的事实，要联系上下文根据文章事实进行合乎逻辑的推理判断．在做段落大意题时考生首先要仔细阅读短文，完整了解信息，准确把握作者观点，确定段意．
