【简答题】A.He knew this beforehand. B.He judged from time zones. C.He made such a judgment so as to Wang. D.He gave such an explanation because he yzed the speeds of sound and electricity.
【简答题】A.He knew this beforehand. B.He judged from time zones. C.He made such a judgment so as to Wang. D.He gave such an explanation because he yzed the speeds of sound and electricity.