26.
What is the professor imply about the history of Hailey’s Comet?
A. Hailey’s Comet did not always have the same orbit it has now
B. Hailey’s Comet used to be much smaller than it is now
C. Hailey’s Comet has always had the same orbit thatit has now
D. Hailey’s Comet is much younger than the rest of the solar system
为啥这题选A呀,我选的是C~~是因为哈雷彗星75年出现一次,然后会化成碎片,so 轨道不一样咩?求推断题解释~~