M:The solar system is so big that even light would take about twelve hours to travel across it. W:So far as I know,it’s no comparison with the great bear. Q:What do we learn from the conversation?()
A.The solar system is a bit smaller than the great bear. B.The solar system is bigger than the great bear. C.The solar system is much smaller than the great bear. D.The solar system is as big as the great bear.