完型补文题：Cell Phones: Hang Up or Keep Talking?【*】Millions of people are using cell phone

                                             Cell Phones: Hang Up or Keep Talking?

【*】Millions of people are using cell phones today. In many places it is actually considered __1__ (usual) not to use one. They find that the phones are more than a means of __2__ (communicate)---having a mobile phone shows that they are cool and __3__(connect).
【*】The __4__ (explode) around the world in mobile phone use make some health professional worried. Some doctors are __5__ (concern) 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 46(public) of such ideas. They say that there is no __7__ (prove) that mobile phones are bad for your health.
【*】On the other hand, signs of change in the issues of the brain and head can be __8__ (detect) with modern scanning equipment. What is it that makes mobile phones __9__ (potential) harmful? The answer is radiation.
【*】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 __10__ (warn) label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.