18．
Do you want to watch a hot movie while chatting with your friend on the phone，or shop with your mobile phone while on a train？The ongoing technology development has made these things come to our daily life
It is said that China has had the right to use the third generation telecommunication technology （3G） since 2009．
The so-called 3G technology allows mobile phone users enjoy high-speed Internet-based services．It helps increase mobility in many areas of our lives．
Nowadays，many mobile phones allow you to send e-mails or read the latest stories on the Internet，but the speed is not pleasing，which is only 10kilobytes （KB） per second．But 3G goes on the Internet with a speed of up to 2megabytes （MB） per second．If recent mobile technology is like riding bikes on a country road，then 3G will make you fly on the information highway．For example，a mobile phone with 3G technology can help download a three-minute MP3song within two minutes while it will take you up to an hour to do this with your common mobile phone．
In the UK and many other European countries where 3G services have around since 2003，3G has already become a part of modem business life．Nowadays，office workers are able to spend some of their working hours at home．The new technology allows the first aid services to provide a video link with a hospital or doctor for patients who need special care．
55．From the passage we can know thatC．
A．we can't enjoy Internet-based services now at the moment in China
B．it is possible for us to enjoy MP3music with our common mobile phones
C．doctors can examine patients by using 3G mobile phones in the UK
D．thanks to 3G phones，many office workers needn't travel to work any more
56．The writer probably regards a 3G mobile phone asA．
A．a fast communication tool
B．a flying tool on the highway
C．a video link to the hospital
D．a chatting friend on the train
57．What's the main idea of this passage？B
A．You have to buy a new mobile phone if you want to enjoy 3G．
B．3G mobile technology makes our life richer and more convenient．
C．In the future，you can enjoy high-quality music using your phone．
D．3G movies on mobile phones are coming to us in the nearby future．
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