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    You may charge (充电) your phone every day, but do you clean your phone as much? Whatever your hands touch, your phones touch. It has been discovered that some phones have 18 times more bacteria (细菌) and viruses (病毒) than any surface in a public restroom. So it won't surprise you that a 2011 University of London study found that one in six of our phones have bacteria and viruses on them.

    The research on bacteria and viruses led to the invention of PhoneSoap. It is not actually liquid (液体). It is a phone charger that uses the electromagnetic radiation (辐射) to kill 99. 9 percent of bacteria and viruses, cleaning your phone while it charges.

    The founders are cousins Wes LaPorte and Dan Barnes, "Certain types of bacteria and viruses are really on our phones," says Barnes. "It would be the fastest, most powerful way to kill them."

    PhoneSoap looks like a little metal suitcase. Your phone rests in to charge and get cleaned at the same time. Instead of plugging your phone into the wall, you'd plug it into the PhoneSoap charger box. The process only takes a few minutes but, Barnes says, "The idea is that you can leave it in there overnight if you want to keep charging and it cleans the phone fully."

    The founders found the right companies and then started shipping (推向市场) the product in late November. By last week's International Consumer Electronics Show in Las Vegas, PhoneSoap was very popular with people. The founders have left their present jobs and are selling PhoneSoap without a stop. "We sell out Phonesoap every day, and we will try to provide enough PhoneSoap," Barnes says. "It's been a great challenge."

    1. (1) Which of the following is TRUE according to the passage?
      A . PhoneSoap is a kind of liquid. B . PhoneSoap takes a whole night to kill bacteria. C . PhoneSoap deals with bacteria and viruses with radiation. D . PhoneSoap has to be plugged into the wall to work.
    2. (2) From the last paragraph, we can infer that _____.
      A . PhoneSoap is in great need now B . PhoneSoap is really hard to use C . workers won't produce enough PhoneSoap D . few people are interested in PhoneSoap
    3. (3) What does the passage mainly talk about?
      A . How to kill bacteria and viruses. B . Tips on how to charge phones quickly. C . Different ways of cleaning phones. D . A phone charger keeping your phone clean.

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