Sanya is ____ in winter. It's ____ than many other cities in China. (warm)
标志着帝国主义在非洲殖民体系最终崩溃的是( )
在平面直角坐标系中,把点P(﹣5,3)向右平移8个单位得到点P1,再将点P1绕原点旋转90°得到点P2,则点P2的坐标是( )