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共用题干 第三篇Cell Phones : Hang Up or Keep T

tikufree2019-12-17  65
问题 共用题干第三篇

Cell Phones : Hang Up or Keep Talking?

Millions of people are using cell phones today.In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried
about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your
health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
（扫描）equipment. In one case , a traveling salesman had to retire at a young age because of serious memory
Loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used
to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.
His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need
it.Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.
选项 People buy cell phones for the following reasons EXCEPT that__________.A:they're convenientB:they're usefulC:they're popularD:they're cheap
答案D
解析由第一段可知，人们买手机是因为它流行，从最后一段第四句可知，买手机是因为它方 便又实用。 detect意思为“发现，找到”, discover的意思与之一样。 由第三段的第三、四句话可知，这个商人很年轻就退休是因为他丧失了记忆力，连简单 的任务都记不住了。 由第四段的最后一句话可知，手机公司认为手机的辐射很小，不足以对人们的健康造 成伤害。 由最后一段第一句话可知，作者的写作目的是劝我们最好少用手机。
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