Question

17．In old times，man considered lightning to be one of the greatest mysteries of nature．In fact，a single flash of lightning 1.6 km long has enough electricity to light one million lamps．
The American scientist，Benjamin Franklin，was the first to suggest that lightning is in fact electricity formed between the Earth and clouds high above．It happened in 1752．In the same year，he also built the first lightning rod to protect buildings from being struck by lightnin g．
Modern science has discovered that lightning is very long and powerful．A lightning between a cloud and the Earth may be as long as 13 km，and travels at a speed of 30 million meters per second．Scientists have the opinion that there are about 2 billion flashes of lightning per year．In the United States alone，it kills almost one person per day．
The safest place to be in during an electrical storm is a closed car．Outside，one should go close to low ground for cover and not stop under a tree．Also one should stay out of water and away from metal fences．Inside a house，people should keep away from open doorways and windows and not touch wires or metal things．
29．In the USA，D．
A．every person can see lightning every day
B．at least one person is killed by lightning every day
C．there are about 6 million flashes of lightning per year
D．about one person per day dies from lightning
30．During a lightning storm，it would be best if youC．
A．stand under a tree                  
B．go outside
C．stay in a closed car                
D．stop near windows
31． A lightning rod canA．
A．prevent accidents caused by lightning      
B．stop lightning
C．protect building from being washed away   
D．delay the coming of lightning．

Answer 1

分析 文章介绍了闪电，以及在闪电中如何保护自己．

解答 29．D 细节理解题．由下文In the United States alone，it kills almost one person per day，几乎每天杀死一个人，故选D．
30．C 细节理解题．文章The safest place to be in during an electrical（电的）storm is a closed car可知在紧闭的车里是最安全的，故选C．
31．A 推理判断题，根据the first lightning rod（避雷针）to protect buildings from being struck by lightnings可知是用来保证不被雷击，而C保护建筑物不被冲走不对，故选A阻止被雷击事故的发生．

点评 解答任务型阅读理解题，首先对原文材料迅速浏览，掌握全文的主旨大意．因为阅读理解题一般没有标题，所以，速读全文，抓住中心主旨很有必要，在速读的过程中，应尽可能多地捕获信息材料．其次，细读题材，各个击破．掌握全文的大意之后，细细阅读每篇材料后的问题，弄清每题要求后，带着问题，再回到原文中去寻找、捕获有关信息．最后，要善于抓住每段的主题句，阅读时，要有较强的针对性．对于捕获到的信息，要做认真分析，仔细推敲，理解透彻，只有这样，针对题目要求，才能做到稳、准．