单选题 What does the author mean by "the Glastonbury Festival has gone from strength to strength"?

【正确答案】 A
【答案解析】[解析] 判断推理题。从第二、三段可知,in 2004 one hundred and fifty thousand fans attended,paying £ 112 for tickets to the three day event.Tickets for the event sold out within three hours.格拉斯顿伯里音乐节从1970年以来不断壮大,到2004年已具相当规模。所以这里表示的是“越来越成功”。