towers,

　　banners and even logos that appear in the panoramas.

　　MOBVIS compares the user's photograph to the panoramas and then identifies the buildings from the picture you take and the relevant links are returned.

　　Then you simply click on the links,

　　using a touch­screen phone,

　　and the MOBVIS system will provide information on the history,

　　art,

　　architecture or even the menu,

　　if it is a restaurant, of the building in question.

　　20．Which is introduced in the passage?

　　A．A new game software.

　　B．A popular mobile phone.

　　C．A cool small machine.

　　D．An image recognition system.

　　21．What can we learn about the new technology?

　　A．It can only be put into use on mobile phones.

　　B．It is a little unbelievable and just a fevered imagination.

　　C．It has taken an unending labour to bring the technology into our lives.

　　D．It will encourage the users to take more pictures of the street features.

　　22．What is the right order of the operation of MOBVIS?

　　a．A city database forms in the system.

　　b．MOBVIS recognizes the picture and links are returned.

　　c．A user touches the links on the phone screen.

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