A killer whale at Sea World Orlando jumped out of its tank on Wednesday and fatally attacked a worker as horrified visitors _______.A.has been looking upB.looked onC.had looked offD.was looking in
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B解析句意：本周三，美国奥兰多海洋世界的一头虎鲸突然从水池中跳出，将一名驯鲸员咬伤致死，让现场围观的游客惊恐不已。此处意思“围观、观看”，look on有此意。