All of the technological advances that have increased the quality of music have not change

All of the technological advances that have increased the quality of music have not changed the fundamental impact of recorded music. Electronic engineering furnishes products which are replaced so【C1】______. It is easy to forget the importance they held at the time of their【C2】______. Before the advent of digital equipment, there were a whole【C3】______ of mechanisms designed to record sound, from the original hand-cranked gramophones,【C4】______ the electric phonographs, the stereo record albums, to the cassette tapes. There are two【C5】______ for these developments: the precision of recording, and the【C6】______ of the equipment. Digital sound engineering is the【C7】______ of industrial efforts. It can【C8】______ the musical sources to the minutest detail and【C9】______ reproduced sounds through portable players. 【C10】______ the continuous wave of new sound facilities, entertainment has changed its form. Before the introduction of mechanical reproduction, it【C11】______ almost impossible to【C12】______ having an entire symphony, performed in a court setting, within a house of small size.【C13】______ classical music, a single household can host a dozen different bands of【C14】______ styles. The delivery of music through the electronic medium now claims high【C15】______ and encourages the prospect of creating a(n)【C16】______ reality. The boundary between reality and representation thus【C17】______ its clear-cut definition; listeners have great difficulty in deciding which is【C18】______, the live source, or the reproduced acoustics. 【C19】______ the distinction between fiction and reality is becoming more and more【C20】______, lifelikeness remains the principle criterion in measuring the effectiveness of sound since the invention of the gramophone.

【C1】

A．quickly

B．gradually

C．slowly

D．abruptly

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