The debate was launched by the Government, which invited anyone with an opinion of the BBC-including ordinary listeners and viewers--to say what was good or bad about the Corporation, and even whether they thought it was worth keeping. The reason for its inquiry is that the BBC’s royal charter runs out in 1996 and it must decide whether to keep the organization as it is, or to make changes.

　　Defenders of the Corporation-of whom there are many---are fond of quoting the American slogan “If it ain’t broke, don’t fix it.” The BBC “ain’t broke”, they say, by which they mean it is not broken (as distinct from the word ‘broke’, meaning having no money), so why bother to change it?

　　Yet the BBC will have to change, because the broadcasting world around it is changing. The commercial TV channels---TV and Channel 4-were required by the Thatcher Government’s Broadcasting Act to become more commercial, competing with each other for advertisers, and cutting costs and jobs. But it is the arrival of new satellite channels--funded partly by advertising and partly by viewers’ subscriptions-which will bring about the biggest changes in the long term.

　　55. The world famous BBC now faces__ .

　　[A] the problem of new coverage

　　[B] an uncertain prospect

　　[C] inquiries by the general public

　　[D] shrinkage of audience

　　56. In the passage, which of the following about the BBC is not mentioned as the key issue?