Hidebound by cloying commercial radio and clueless record executives, the American pop music scene has frequently depended on cities at the edges of the cultural map to provide a much-needed shot of (i)_____. Seattle, Minneapolis, Austin, Texas, and Athens, Georgia, have all served as temporary pivot points, churning out bands and defining the sound of the moment. Even Omaha, Nebraska, has its 15 minutes not so long ago. The momentary (ii)_____ seems to come out of nowhere—as if someone blows a whistle only those in the know can hear, and suddenly record executives and journalists are crawling all over what had previously been an obscure locale.
答案：A,D