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    9．Lightning（闪电）is shocking，and it happens all over the world!Scientists think that there are more than three million lightning strikes（袭击）every day in the world-that's thirty strik es every second．
    Lightning can also be very dangerous．Every year，lightning kills people because it can start big fires or because it reaches temperatures up to 28，000 degrees centigrade．American Roy Sullivan，who worked in a park，holds the record for surviving the most lightning strikes．Between 1942 and 1983，he was hit seven times!
    So，why does lightning strike？Lightning strikes happen when ice and water in clouds rub（摩擦）together，and cause atmospheric（大气层的）changes．When this happens，it creates a static charge（静电电荷）．Lightning can strike inside the cloud，between two clouds and between a cloud and Earth．It's the last type of strike that is the most dangerous for humans．About 1，000 people get struck by lightning every year in the United States，and about 100 of them die as a result．
    Lightning is certainly not somethingto toy with．When lightning strikes，it's best to stay inside a large building．To stay safe，do not stand under trees，on hills or near water．Trees attract lightning．Also，do not lie down on the ground，otherwise the electricity may go through you and cause a heart disease．
     
    51．Lightning strikesC．
    A．happen three billion times each day
    B．will start when there are big fires
    C．can reach very high temperatures
    D．kill all those who work in a park
    52．What does"surviving"in paragraph 2 mean in Chinese？B
    A．目睹                     
    B．幸存                     
    C．制造                     
    D．遇难
    53．We can infer（推断）from paragraph 3 thatD．
    A．lightning strikes are caused whenever ice and water meet
    B．lightning between two clouds is the most dangerous for humans
    C．lig htning strikes create static charge
    D．about one tenth of the people struck by lightning die every year in America
    54．Which expression means"to toy with"in the last paragraph？A
    A．to play with         
    B．to take seriously                 
    C．to show off   
    D．to take it easy
    55．Where's the best place to be when lightning strikes？D
    A．On top of a hill．
    B．In a swimming pool．
    C．In a tree．
    D．Inside．

    分析 这篇文章讲述闪电的杀伤力和世界上的一些电击事例，在美国每年有十分之一的人被闪电击中．以及闪电来袭时的躲避技巧．当闪电来袭，最佳的停留地点是在一栋建筑物里．

    解答 51．C考查细节理解．从第二段第二句Every year，lightning kills people because it can start big fires or because it reaches temperatures up to 28，000 degrees centigrade．闪电袭击有时会达到很高的温度．故选C．
    52．B考查猜测词义．从划线词的后一句Between 1942 and 1983，he was hit seven times!在1942-1983年间，他被雷电击中了7次．可知是幸存者，故选B．
    53．D考查细节理解．从第三段最后一句About 1，000 people get struck by lightning every year in the United States，and about 100 of them die as a result．在美国每年有十分之一的人被闪电击中．故选D．
    54．A考查细节理解．toy，名词，意为：玩具．动词，意为：玩弄，随随便便的对待．A．to play with玩弄，B．to take seriously认真对待，C．to show off炫耀，D．to take it easy放松．根据句意此处对应答案A．
    55．D考查细节理解．从最后一段it's best to stay inside a large building当闪电来袭，最佳的停留地点是在一栋建筑物里．故选D．

    点评 在做英语阅读时，首先通读全文，不要被某个或某些自己不熟悉的单词所困扰，了解大概意思．然后看问题，带着问题精读全文，同时选择答案，必要时用排除法

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