2015年职称英语考试真题及答案：理工B完形填空
据网友提供信息，2015年职称英语考试理工B完形填空来自于教材中阅读理解第29篇，
I’ll Be Bach。各位考友可以参考原文，比对答案。
以下为理工教材原文：
第二十九篇 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 tell the difference between music by the famous German composer J. S. Bach1 (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 trouble thinking of new melodies, so he wrote a computer program to create the melodies. At first this music was not easy to listen to. What did Cope do? He began to rethink how human beings compose music. He realized that composers，brains work like big databases.First, they take in all the music that they have ever heard. Then they take out the music that they dislike. Finally, they make new music from what is left. 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 huge database of existing music. He began with hundreds of works by Bach. The software analyzed the data：it broke it down into smaller pieces and looked for patterns. It then combined the pieces into new patterns.Before long, the program could compose short Bach-like works. They weren’tgood, 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 analyze 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 process required a lot of collaboration between the composer and Emmy. Cope listened to the computer’s musical ideas and used the ones that he liked. With Emmy, the opera took only two w