A.People named the flying object UFO in the 19th century. |
B.The UFOs Martin and Kenneth Arnold saw were in different shapes. |
C.Kenneth Arnold was given little attention for his discovering UFO. |
D.Martin was the first person that described the flying object as a plate. |
A.Research. | B.Evidence. |
C.Appearance. | D.Mystery. |
A.most UFOs’shapes are changeable |
B.the danger of UFOs attracted the media’s attention |
C.the radar helps people get UFO evidence |
D.Ufology was developed a hundred years ago |
A.different UFOs’shapes |
B.famous movies on the UFOs |
C.the new science —Ufology |
D.the effect of UFOs on humans |