GMAT
Like the great navigators who first sailed around the Earth for gathering information about its size and also the curvature of its surface, new observations have been made by astronomers that show with startling directness the large-scale geometry of the universe.
Like the great navigators who first sailed around the Earth gathering information about its size and the curvature of its surface, astronomers have made new observations that show with startling directness the large-scale geometry of the universe.
题目基本信息