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1/ _____ 2/ _____ 3/ _____ 4/ _____ 5/ _____ 6/ _____ V. (23-28) Choose the word or phrase that best fits the blank space in the following passage: On October 21, 1978, Australian pilot Frederick Valentich, age 20, took off from Melbourne and (23)__________ towards a small island. It was the young men’s first solo night over water. It was a still, clear evening, and from his Cessna aircraft Valentich had a perfect (24) _________ of the sky above and the sea below. Shortly after taking off, Valentich reported to flight controllers in Melbourne that he was being followed by a UFO. “ It’s a long shape,” he reported, “ with a green light, sort of metallic like, all shiny on the outside”. A few minutes later, he told the controllers, “ That strange aircraft is hovering on top of me again.” After that Valentich stopped talking. For the next fourteen seconds the traffic controllers heard a strange ringing sound. Then silence. Valentich and his plane never reached the island, and no (25) __________ of him or his aircraft was ever found. Several (26) __________ of the public report seeing strange phenomena in the sky over Melbourne that night. An amateur photographer produced a photo of (27) __________ looked like a large object surrounded by vapor. A NASA scientist, Richard Haines, heard about the story and began an (28) __________. He analyzed Valentich’s voice on tape and the strange sound heard at the end of the tape. But he

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concluded that it was “ unidentifiable.” He decided that there were four possible explanations for the mystery surroundings Valentich disappearance: (1) Valentich might have become confused and disoriented while flying his plane and finally crashed; (2) He could have staged a deliberate hoax;(3) he could have been the victim of a top secret advanced weapons test; or he may have benn captured by the occupants of a OFO.