question: "Mobile phones killed our man,"screamed one headline last year.Also came statements that an unpublished study had found that mobile phones cause memory loss. And a British newspaper devoted its front page to a picture supposedly showing how mobile phones heat the brain.For anyone who uses a mobile phone,these are worring times.But speak to the scientists whose work is the focus of these scared and you will hear a different story.

What we do have,however,are some results suggesting that mobile phones'emission have a variety of strange effects on living tissue that can't be explained by the general radiation biology.And it's only when the questions raised by these experiments are answered that we'll be able to say for sure what moblie phones might be doing to the brain.

One of the strange effects comes from the now famous "memory loss" study Alan Preece and his colleagues at the University of Bristol placed a device that copied the microwave emission of mobile phones to the left ear of volunteers.The volunteers were all good at recalling words and pictures they had been shown on a computer screen.Preece says he still can't comment on the effects of using a mobile phone for years on end.But he rules out the suggestion that mobile phones have an immediate effect on our cognitive abilities."I'm pretty sure there is no effect on short-term memory,"he says.

Another expert,Tatterasll,remarked that his latest findings have removed fears about memory loss.One result,for instance,suggests that nerve cell synapses exposed to microwaves become more--rather than less--receptive to under--going changes linked to the memory formation.

It would be an even happier outcome if microwave turned out to be good for you.It sounds crazy,but a couple of years ago a team led by William Adey at the Veterans Affairs Medical Center in California,found that mice exposed to microwave for two hours a day were less likely to develop brain tumours when given a cancer--causing chemical.

So should we forget about mobile phone radiation causing brain tumours and making us unable to think clearly or reasonably?

"If it doesn't certainly cause cancer in animals and cells, then it probably isn't going to cause cancer in humans,"says William.And while there's still no absolute evidence that mobile phone does damage your memories or give your cancer,the _ is:Don't panic.
1. What did one headline say about mobile phones last year?
2. What did an unpublished study find mobile phones cause?
3. What was the name of the person who conducted the memory loss study
4. Where did he do the study?
5. Did he rule out the suggestion that mobile phones cause memory loss?
6. Did he determine there is an effect on short-term memory?
7. What did Tatterasll determine?
8. Who led the study on mice exposed to microwaves?
9. Where was the study conducted?
10. Did the study conclude that mice were more likely to develop brain tumours after being exposed to microwave?
11. Does the author think we should have some concern about mobile phone radiation?
****
answer: 1. Mobile phones killed our man
2. They cause memory loss
3. Alan Preece
4. University of Bristo
5. No
6. No
7. He removed fears about memory loss,
8. William Adey
9. At the Veterans Affairs Medical Center in California
10. No
11. No

input: Make use of the article to answer the questions. (CNN) -- John Lajeunesse said he was heading to the Renegade Mountain area to go four-wheeling, nothing out of the ordinary for a 16-year-old kid in rural Tennessee.

How he and three other young people ended up shot dead inside a car on that same mountain is now a mystery before police and the small community of nearby Crossville.

A passerby discovered the car with the four victims, including a young mother, parked along a country road near the Renegade Mountain community Thursday morning.

Lajeunesse and a pair of 17-year-olds, Steven Presley and Dominic Davis, were the passengers. Rikki Jacobsen, a 22-year-old mother of a young boy, was in the driver's seat.

Three of the victims were current or former students of the local school district.

"It's something that reverberates through the entire community," said Donald Andrews, Cumberland County's school superintendent. "The loss of life is always tough, and especially (so) when it's young people."

Only one man has been publicly linked to the killings: Jacob Allen Bennett. Authorities said he was identified fairly quickly into the investigation and taken into custody around midnight Thursday without incident on a parole violation in nearby Rhea County.

Randy York, the district attorney general whose territory includes the crime scene, told reporters Friday that his office intends "in the very near future" to empanel a grand jury to consider charges against Bennett related to the four killings.

"The citizens of Cumberland County and Crossville can rest assured that we have the person who committed the crimes in custody, that the community is safe," said Tennessee Bureau of Investigation Director Mark Gwyn. 1. How many people were killed?
2. How were they killed?
3. Where were they?
4. Does the mountain have a name?
5. What were they doing there?
6. Who is John Lajeunesse?
7. how old was he?
8. Who found them?
9. How many of the dead attended the same school?
10. How old is the mother?
11. Did she have adult children?
12. How old are Steven and Dominic?
13. And Lajeunesse?
14. Who appeared to have been the driver?
15. Where they found outside of the car?
16. Who is Randy York?
17. Who is he considering charges against?
18. When was Bennett arrested?
19. What did they arrest him for?
20. Where?
numbered_answers:
1. four
2. they were shot
3. on a mountain
4. Renegade Mountain
5. four-wheeling
6. one of the dead
7. 16
8. A passerby
9. three
10. 22
11. no
12. 17
13. 16
14. Rikki Jacobsen
15. no
16. the district attorney general
17. Bennett
18. Thursday
19. a parole violation
20. in Rhea County