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  3. I’ll Be Bach Composer David Cope is the inventor of a computer program that writes original works of classical music. It too

I’ll Be Bach Composer David Cope is the inventor of a computer program that writes original works of classical music. It too

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问题                         I’ll Be Bach
    Composer David Cope is the inventor of a computer program that writes original works of classical music. It took Cope 30 years to develop the software. Now most people can’t【C1】______ the difference between music by the famous German composer J. S. Bach(1685 - 1750)and the Bach-like compositions from Cope’s computer.
    It all started in 1980 in the United States, when Cope was trying to write an opera. He was having【C2】______thinking of new melodies, so he wrote a computer program to create the melodies. At first this music was not【C3】______to listen to. What did Cope do? He began to rethink how human beings compose music. He realized that composers, brains【C4】______like big databases. First, they take in all the music that they have ever heard. Then they take 【C5】______the music that they dislike. Finally, they make new music from what is【C6】______. According to Cope, only the great composers are able to create the database accurately, remember it, and form new musical patterns from it.
    Cope built a【C7】______database of existing music. He began with hundreds of works by Bach. The software analyzed the data: it【C8】______it down into smaller pieces and looked for patterns. It then combined the【C9】______into new patterns. Before long, the program could compose short Bach-like works. They weren’t good, but it was a start.
    Cope knew he had more work to do—he had a whole opera to write. He continued to improve the software. Soon it could【C10】______more complex music. He also added many other composers , including his own work to the database.
    A few years later, Cope’s computer program, called "Emmy" , was ready to help him with his opera. The【C11】______required a lot of collaboration between the composer and Emmy. Cope listened to the computer’s musical ideas and used the【C12】______that he liked. With Emmy, the opera took only two weeks to finish. It was called Cradle Falling, and it was a great 【C13】______! Cope received some of the best reviews of his career, but no one knew exactly 【C14】______he had composed the work.
    Since that first opera, Emmy has written thousands of compositions. Cope still gives Emmy feedback on what he likes and doesn’t like of her music, 【C15】______she is doing most of the hard work of composing these days!
【C15】
选项 A、but
B、until
C、so
D、because
答案A
解析 该空前后两个半句存在转折关系，因此用but。句意是，科普现在仍然会给艾米反馈，告诉她哪些音乐是他喜欢的，哪些音乐是他不喜欢的，但是现在大部分艰巨的工作是由艾米来完成的。故本题选A。
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