A-A+
A．They are filled with advertisements.B．They a
问题详情
A．They are filled with advertisements.
B．They are interrupted by advertising messages.
C．They must be interesting to huge groups of people.
D．They can be interesting only to small groups of people.
参考答案
正确答案：D
解析：语意理解题 。根据文中第一段第十句it can broadcast programs of interest to smaller groups of people“它可播放一些小部分人感兴趣的节目”。其中It指的是public televiion program，因此答案选D项。
