【正文】
but also 4. gave concerts 5. What sort/ kind of 6. in addition to 三、 1. A 2. A 3. C 4. A 。 ( )1. According to the passage, background music_______. A. can possibly make people feel better and influence their attitudes B. increases the production by percent in every factory C. is sometimes very boring to the workers[ ( )2. A worker in San Francisco said if the music stopped,_______. A. someone would always go to plain about it B. he himself would call up the background music pany C. people would go and tell the telephone operator about the accident ( )3. Background music was started in factories_______. A. in the 195039。s good for business. You can see why music has bee so popular. In Los Angeles(洛杉磯 ), for example, 30 different panies are