Listen to a short passage and fill in each blank with only one word．
    BBC is short for the British Broadcasting Corporation，which was（1）

on October 18，1922．BBC is the world's oldest national broadcasting organization．It's also the largest broadcaster in the world by its number of（2）

．It has about 23，000 staff．Nowadays the radio provides home listeners with four selective national channels（頻道）．Each has a special character（特征）．Radio one，broadcasting about 12 hours daily， （3）

the public a program of popular music．Radio Two broadcasts 20 hours a day and provides light music，musicals（音樂劇）and even operas．It's the（4）

channel for all sorts of sports as well．Radio Three，on the air about 17 hours a day，is the channel for classical（古典的）music．It provides classical music，grand（宏大的） operas，theater plays and serious news．Radio Four，which is relatively new，provides its listeners with important and most detailed news and information service of BBC Radio．It's on the air for 16 hours daily．Moreover，it offers a very wide range of drama talks and （5）

programs as well as broadcasts to schools．