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姓名：__________班级：__________考号：__________ 、完形填空 Unexpected things may happen every day but no one can tell when and where. People usually get surprised or frightened by such things. One day I 1a taxi to go to a meeting. As it came near the corner, the taxi stopped suddenly.The 2got out looking very puzzled(迷惑). A big 3which had been following the taxi stopped, too. The taxi driver was now 4at the corner looking up 5the sky and the truck driver got out and 6him. A number of cars behind them were 7to stop as well and a large crowd of people had 8at the corner. The cause of all this 9was a very strange noise. It 10as if thousands and thousands of 11were chirping（鸣叫）.The sound of so 12birds toghter was quite surprising and many people looked 13. The most extraordinary thing was that,except one or two 14, there was not a bird in 15. No one was able to know why — 16two policemen arrived on the scene. They walked all around the area for a while and then went over near the railroad tracks beside a big board advertisement(广告)for a 17. Since the noise seemed to be coming from around there, they climbed up and found that two loudspeakers had been | 
