A.About 700 million light-years from Sun. B.About 700 million light-years from Earth. C.About 700 million light-years from the black hole. D.About 700 million light-years from a galaxy.
【简答题】A.Convince the man that they should rest for a while. B.Teach the man about the types of clouds. C.Entertain the man with some interesting weather stories. D.Persuade the man to turn around and go dow...