仔细阅读下列短文, 根据题目, 选出最佳选项. It's sometimes reported(报道) that people have seen strange objects(物体)high up in the sky. These unidentified flying objects桿FOs(不明飞行物) have made a lot of people interested. Some of the reports about them are difficult to believe. Scientists have explained some of them, but not all of them. It is not easy to decide whether a report is true or not. One report of UFOs came from a British plane on its way from New York to London in 1954. The British plane was flying over an island at 19,000 feet when the captain(机长)noticed that something was on their left and a little lower than their plane. It's about five miles away. "It was not one object but several," the captain said. "We saw one large and six smaller objects. I sent out a radio to report about them and I received the answer that the other planes were coming out to meet us. Before the planes arrived, the smaller objects entered(进入)the big object. The big object then became smaller and moved away fast. " |