1读音选词  根据所给句意和音标，从每题A、B、C、D四个选项中，选出一个最佳答案。

1.There will be heavy rain and strong wind next ___________. / wi:k /

A. week        B. wait            C. west           D. weak

2.How often do you exercise? I exercise ______________/ wʌns/ a day.

A. won         B. once          C. win       D. one

3.The library is on the left ____________  /saɪd / of the bank.

A. said         B. send            C. sad            D. side

4.You’ll _____________ /feil/ in the final exam if you don’t work harder.

A. feel         B. fell             C. fail            D. fill

5.If I had one million dollars, I’d give it away to ______________/′medikəl/ research.

A. medicine       B. medical     C. magazine      D. metal

     girls took part in the Happy Girl Competition but only few of them succeeded.

A. Million of       B. Many million of      C. One million of  D. Millions of

In old times，man considered lightning to be one of the great mysteries（神秘事物）of nature．In fact a single flash of lightning 1.6 kilometers 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（避雷针）to protect buildings from being struck by lightnings．
Modern science has discovered that lightning is very strong and powerful．A lightning between a cloud and the earth may be as long as 13 kilometers，and travels at a speed of 30 million meters per second．Scientists have the opinion that there are about 2000 million 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（电的）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．
【小题1】From this passage we know lightning is____．

（C）用所给词的适当形式填空，每空只填一词。