A、Writing a composition. B、Producing a cell phone film. C、Sending text messages. D、Telling a story by cell phone. B新闻提到，美国一所大学正在

Cell phones have become a central force in the daily life of teens around the world. In addition to calling each other, and sending text messages, they use their cell phones to connect with web sites, play music and games, and take pictures. Now, a U.S. college is holding a competition, giving young people a chance to get really creative with this tiny hand held device. They’re being challenged to produce a cell phone film. "It needs to be edited. It needs to have some kind of audio, voice-over or music, and it needs to tell a story." And said contest organizer Dianne Lynch. It must be shot entirely with cell phones. She says that the best film will not be very different from an award-winning movie in any other format.
3. What is the subject of the competition?
4. What do we learn about the competition from the news?