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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 up    B. looked on     C. had looked off   D. was looking in

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。

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