WARNING: Holding a cell phone against your ear or
putting it in your pocket may be bad for your health.

This sentence is a warning that you’d better not put
it close to you when a new phone is bought. Apple company, for example, doesn't
want IPhones to come closer to you than 1.5 centimeters; Research In Motion,
BlackBerry's producer, recommends 2.5 centimeters.
(1)If cell phone use can health
problems, the will be
very serious. Americans spend 2.26 trillion minutes chatting on cell phones
every year, which brings $109 billion for the wireless businessmen.
Devra Davis, an epidemiologist(皮肤病专家) who has worked for the University of Pittsburgh, has
published a book about mobile phone radiation(辐射)"Disconnect."
Davis studies how often brain cancer happens during different age groups. She
finds a big increase in brain cancer in the 20-to-29 age group and a drop for
the older people.
Children are more easily hurt by radiation than
grown-ups, Ms. Davis and other scientists point out. But no studies have yet
been finished on cell phone radiation and children, she says.
Henry Lai, a research professor, began lab radiation
studies in 1980 and found that mice exposed to(暴露在)
radiofrequency(电波频率)radi
ation
had destroye
d
DNA in their brains.
Ms. Davis recommends using wired earphones(有线耳机)or the phone's speaker. (2)Children should send text
messages rather than call, she said, and pregnant(怀孕的)
women shou
ld
keep phones away from their bodies.
1.在(1)句空白处填入适当的词使句意完整、上下文通顺。
2.将(2)句翻译成中文。
3.回答问题:What kind of people
with brain cancer are getting more and more?
4.找出同义句。
Scientists are still carrying on with the studies on
cell phone radiation and children
5.找出或写出该短文的主题句。