题目内容：

Next time you’re planning to go out for a relaxing walk with your MP3 player, be sure to check the weather forecast first. Summer is the prime time for lightning strikes, a fact that Jason Bunch, a teen from Castle Rock, Colo, learned in a hard way. A couple of summers ago, he was mowing (割草) grass while listening to some Metallica on his iPod. Although there wasn’t any rain falling on Bunch, he did hear distant thunder. Bunch was then struck by lightning, which seemed to travel through his music player, blowing out his eardrums and leaving him with burns where the device and its power lines were close to his body.

Devices such as MP3 players don’t attract lightning, says Dr. Mary Ann Cooper, an emergency room physician at the University of Illinois Medical Center in Chicago. However, they may change the pathway that lightning’s energy follows in the human body. Lightning that might have passed rather harmlessly over the skin may react differently to the metal of these devices and cause damage.

Rather than leaving your tunes at home, your best bet is watching out for lightning before it hits. Though people have been injured while using MP3 players in storms, Cooper says, “The devices’ main task is keeping you from paying attention to thunder and the sky.” If you’re caught in a storm, seek shelter.

1.When does lightning happen most?

A. Winter.    B. Fall.    C. Summer.    D. Spring.

2.What was the effect of this lightning strike on Jason Bunch?

A. The lightning burned Bunch and blew out his eardrums.

B. The lightning passed harmlessly over Bunch’s skin.

C. Bunch fell to the ground and couldn’t move his upper body.

D. Bunch was fine, but his iPod was burned by the lightning.

3.What can you conclude about the safety of using MP3 players during a storm?

A. MP3 players are desperately unsafe to use during a storm.

B. IPods are safe to use during a storm, but other MP3 players are not.

C. MP3 players increase your safety during a storm by directing lightning toward the ground.

D. MP3 players become unsafe to use if they keep you from paying attention during a storm.

4.The primary purpose of this text is       .

A. to describe the joy that Jason Bunch felt after he survived a lightning strike

B. to inform the risks of wearing an MP3 player during lightning strikes

C. to tell a lightning emergency Jason Bunch met with

D. to show that MP3 players are so popular among teenagers