Lightening Strikes

　　Three years ago a bolt of lightning all but destroyed Lyn Miller’s house in Aberdeen—with her two children inside. “There was a huge rainstorm,” she says, recalling the terrifying experience. “My brother and I were outside desperately working to stop floodwater from coming in the house. Suddenly I was thrown to the ground by an enormous bang. ____1____ The door was blocked by rubble, but we forced our way in and found the children, thankfully unharmed. Later I was told to be struck by lightning is a chance in a million.” In fact, it’s calculated at one chance in 600,000. Even so, Dr Mark Keys of AER Technology, an organisation that monitors the effects of lightning, thinks you should be sensible. “I wouldn’t go out in a storm—but then I’m quite a careful person.” He advises anyone who is unlucky enough to be caught in a storm to get down on the ground and curl up into a ball, making yourself as small as possible.

　　Lightning is one of nature’s most awesome displays of sheer power. ____2____ 250 years ago, Benjamin Franklin, the American scientist and statesman，proved that lightning is a form of electricity, but scientists still lack a complete understanding of how it works.

　　____3____ Positive electrical charges streaming upwards from trees or church spires may glow and make a buzzing noise, and people’s hair can stand on end. And if you fear lightning, you’ll be glad to know that a company inAmericahas manufactured a hand-held lightning detector which can detect it up to 70 kms away, sound a warning tone and monitor the storm’s approach.

　　Nancy Wilder was playing golf at a club inSurreywhen she was hit by a bolt of lightning. Mrs Wilder’s heart stopped beating, but she was resuscitated and, after a few days in hospital, where she was treated for bums to her head, hands and feet, she was pronounced fit again. Since that time, she has been a strictly fair weather golfer1. ____4____ The best place to be is inside a car!

　　The largest number of people to be struck by lightning at one time was in September 1995 when 17 players on a football pitch were hit simultaneously. The most extraordinary aspect of the strike was the fact that 11 of the victims—seven adults and four children—had burn patterns of tiny holes at 3 centimetre intervals on each toe and around the soles of their feet.

　　Harold Deal, a retired electrician fromSouth Carolina,USA, was struck by lightning 26 years ago. He was apparently unhurt, but it later emerged that the strike had damaged the part of the brain which controls the sensation of temperature. ____5____Animals are victims of lightning too2．Hundreds of cows and sheep are killed every year, largely because they go under trees. InEast Angliain 1918, 504 sheep were killed instantaneously by the same bolt of lightning that hit the ground and travelled through the entire flock. Lightning is also responsible for starting more than 10,000 forest fires each year world-wide.

　　词汇:

　　bolt / bəʊlt / n. （闪电）道
　　sheer / ʃɪə / adj. 绝对的
　　resuscitate / rɪ"sʌsɪteɪt / v. 使复苏
　　flock / flɒk /  n. 群
　　rubble / "rʌb(ə)l / n. 碎石
　　spire / spaɪə / n. 尖顶，尖塔
　　instantaneously / ,instən"teinjəsli /adv. 即刻，突如其来地

　　注释:

　　1．she has been a strictly fair weather golfer：她变成了一个只在晴朗天气才打高尔夫的人。
　　2．Animals are victims of lightning too：动物也会受到雷击的伤害。

　　练习:

空1

A:A B:B C:C D:D E:E F:F

患者外周血检查结果：RBC4.5×10¹²/L，Hb105g/L，Hct0.32，其MCV应为（）。

A:23fl B:30fl C:51fl D:71fl E:144fl

Fl

超外差收音机中，本振频率Fl，高频信号频率Fc，中频信号频率Fi之间的正确关系是（）

A:Fi=Fc-Fl B:Fi=Fl-Fc C:Fl=Fc-Fi D:Fl=Fi-Fc

当通过FL200时发生重力供油，重力供油的最大高度层是：（）.

A:FL200（JETB为FL200） B:FL200（JETB为FL100） C:FL100 D:FL150（JETB为FL100）

飞行巡航高度FL100---FL250时，提供（）层重要天气预告图、（）的高空风温度预告图

A:中；FL240和FL180层次 B:高；FL240和FL180层次 C:低；FL240和FL180层次

与血液分析仪细胞分类相对应的细胞体积大小

A:160fl以上 B:20～40fl C:35～90fl D:50～150fl E:90～160fl

与血液分析仪细胞分类相对应的细胞体积大小

A:160fl以上 B:20～40fl C:35～90fl D:50～150fl E:90～160fl

与血液分析仪细胞分类相对应的细胞体积大小

A:160fl以上 B:20～40fl C:35～90fl D:50～150fl E:90～160fl

已知fl(int)是类A的公有成员函数，p是指向成员函数fl（　）的指针，采用赋值，( )是正确的。

A:p=fl B:P=A::fl C:P=A::fl() D:P=fl()