A-A+
A．It started at a time when the workers were s
问题详情
A．It started at a time when the workers were slower in work.
B．it started during the Second World War.
C．It started before the factories had their own orchestras.
D．It started in the early part of 19th Century.
参考答案
正确答案：B
解析：本题问“背景音乐是什么时候开始在工厂使用的?”文中提到，在二战期间就开始了，那时一些工厂已经有了自己的管弦乐队使工人保持快乐和平静。由此可见，背景音乐是在二战期间开始，那时一些工厂有了自己的管弦乐队，它们几乎同时存在，而不是在此之前。故[B]“背景音乐是在；战期间开始”正确。
