题目内容

词汇应用
     One day, a man had an (1)__________(usual) experience. When he looked up into the sky, he saw a strange thing
(2)__________(fly) in the sky. It was not a plane or a bird. He couldn't (3)__________(explain) what it was. After that,
many people saw these unusual things. Those people saw these things in the sky, on the land, or in the water. These
things (4)__________(call) UFOs.    Many scientists have a great (5)__________(interested) in (6)__________(study)
UFOs. We often call these scientists UFOlogists. They study UFO (7)__________(report) in newspapers and on the
Internet. They find out that about 90% of all the UFOs people saw were just natural phenomena or man-made things.
Some scientists even spend their whole (8)__________(life) on UFOs. Some scientists are trying (9)__________(find)
UFOs from the (10)__________(inside) world. We call (111)__________(they) UFO Hunters. In fact, what they want to
find are (12)__________(alien). I believe they will find what they want to find.
1. unusual   2. flying   3. explain   4. are called   5. interest   6. studying
7. to report   8. lives   9. to find   10. outside   11. them   12. aliens
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