我国最东部的岛屿是钓鱼岛；最南部的岛屿群是南沙群岛。
参考答案：错
—It’s a pity that I can only live here for two days _______.
—Why not stay for another day? I know you have three days off.
A．at first
B．at last
C．at least
D．at most
冲击系数
