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，美國(guó)奧蘭多海洋世界的一頭虎鯨突然從水池中跳出，將一名馴鯨員咬傷致死，讓現(xiàn)場(chǎng)圍觀的游客驚恐不已。此處意思“圍觀、觀看”，look on有此意。

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