A:in addition to
B:by way of
C:in terms of
D:by means of
The headmaster is so wise that we believe he will lead the school to _____ future.
右图为***与蒋介石1945年在重庆拍摄的两人一生中唯一的单独合影,他们这次见面谈判取得的重要成果是 ( )
一个酒杯的轴截面是抛物线的一部分,它的方程是x2=2y0≤y≤20.在杯内放入一个玻璃球,要使球触及酒杯底部,则玻璃球的半径r的范围是( )