6. Choose the best option A, B, Cor 0 to complete the passage. Franklin Roberts was a commercial airline pilot with more than 21,000 hours of flying time behind him. However, (1) _________________ of his great experience, he could not explain something which happened (2) __________ him in the summer of 1981. As he was flying over Lake Michigan, an object (3) _________________ in the sky which took him completely by surprise. (4) _________________ it was, it raced through the sky ahead of his plane and then turned across his path, before finally disappearing into the distance. (5) _________________ is the kind of incident that fascinates Richard Haines, a psychologist who works at a research institute (6) _____________ California, and investigates reports like these as a hobby. Over the last twelve years, he (7) _________________ collected thousands of reports on UFOs seen by plane crews. He has concentrated on the stories told to him by pilots (8) _________________ he believes they are more likely to be accurate. Pilots are trained in observation and make reliable witnesses. They would generally know what they were looking at (9) _________________ it were something familiar. Critics of Haines's work say that there is, in fact, nothing special about pilots. They claim that pilots are as capable of making mistakes as (10) _________________ else. However, none of this has stopped Haines, who continues to investigate UFO reports with enthusiasm. 1. A. though B. although C. in spite D. despite 2. A. with B. to C. for D. on 3. A. was appeared B. appears C. was appearing D. appeared 4. A. Whatever B. What C. However D. How 5. A. It B. Those C. These D. This 6. A. at B. in C. on D. from 7. A. was B. X C. has D. had 8. A. because B. because of C. but D. though 9. A. whether B. or C. unless D. if 10. A. everyone B. anyone C. somebody D. ones