第三部分：阅读理解（共20小题，共40分）
第一节（共15题, 每小题2分，满分30分）
阅读下列短文，从每题所给的四个选项（A,B,C和D）中，选出最佳选项。
We often hear the phrase: “You have a greater chance of being struck by lightning．”It is used to describe something that hasn’t got much chance of happening．However, the common saying undermines（掩盖）the very real dangers of lightning．
Last Friday, at least 5 people were killed by lightning in Nepal（尼泊尔）．
Lightning strikes are the second most common cause of deaths during natural disasters in the US．The first is floods．Around 400 people nationwide are struck by lightning each year, and of those, 70 people die．That is, more people are killed by lightning than by tornadoes and hurricanes．
Because lightning kills only one or two people at a time, its danger does not receive as much attention as other disasters．
“If you hear thunder, you are in danger from lightning, ”said Rocky Lopes, a disaster educator at the American Red Cross．
“Thunder means that lightning is close enough to hit you at any time, so you should move indoors immediately and stay there until the storm has ended．The most important thing to remember is to seek shelter,”Lopes said．
Summer is the peak time for lightning storms, so when lightning strikes across the sky, remember these safety tips:
*Stop working, fishing, swimming or playing in open fields．
*Do not stand under a tree．
*Get off bicycle and motorcycles．
*Crouch down（蹲下）if there is no shelter．
*Avoid open spaces, wire fences, metal objects and electrical objects such as hair driers．
56．Of the people who are struck by lightning each year in the U．S．A．, about ____ people are lucky enough to continue to live．
A．400 B．330 C．70 D．5
57．If you hear the thunder, the most important thing you do is to _____．
A．find shelter to hide in B．stand still in the open spaces
C．stand under a tree D．stop working in the fields
58．Which of the following is NOT true?
A．If you hear the thunder, you needn’t move indoors right away．
B．Fewer than 70 people are killed by tornadoes and hurricanes each year in the U．S．A．
C．People don’t pay as much attention to the danger of lightning as that of floods．
D．Floods are the first most common cause of deaths during natural disasters in the U．S．A．