[解析]
21.A 22.B 23.D 24.C
21.细节理解题.根据第一则广告最后一句:He's going to talk about how you can find the right person to produce you music.可知Jules skye会谈论如何找到一个好的音乐制作人.故选A.
22.细节理解题.根据文章第二则广告第三句:This joyful show will please everyone,from the youngest to the oldest.Gee Whizz really knows how to make you laugh!Our bar is open from 7.00pm for drinks and snacks(快餐).可知这场表演能够让所有年轻的人都很开心.表演的场所在Kaleidoscope.故选B.
23.D 细节理解题.根据第三则广告第二行中"5.00pm-7.30pmWednesdaysatVictoriaStage"可知Simon'sWorkshop的表演是在每周三下午5点至7点30之间进行.故选D.
24.C细节理解题.根据第四则广告第二行"8.00pm-11.00pmPizzaWorld"可知CharlotteStone将在晚上8.00至11点之间表演她最受欢迎的歌曲.故选C.