3. According to the reading, the writer argues that the university extend the broadcasting hours of its radio.
The woman thinks it is not a good idea for two reasons.
First, the radio is not a major source of information for most students. Instead students use the university's website to search for significant announcement or information. So current situation about the radio hours does not need to be modified.
Second, students do not rely on the radio for entertainment. To be specific, almost every students enjoy watching TV or listening to music between classes. (In what way?) So even if the university offers more fun radio, students would still spend their time going online for lots of contents.
For these reasons, she believes that extending the broadcast hours of the radio is not a good idea.
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