【单选题】The Prime Minister refused to ________ on the rumour that he had planned to resign.
【简答题】The bank refused to ______him any money, so he had to postpone buying a house. A)credit B)borrow C)loan D)lease
【简答题】已知曲线 的参数方程为 ( 为参数),曲线 的极坐标方程 . (Ⅰ)将曲线 的参数方程化为普通方程,将曲线 的极坐标方程化为直角坐标方程; (Ⅱ)曲线 , 是否相交,若相交请求出公共弦的长,若不相交,请说明理由.
【单选题】下列哪种计算机语言的数学统计功能特别强大:
【单选题】Not only ______ about the food, but he also refused to pay for it.
【简答题】已知直线l的参数方程: (t为参数)和圆C的极坐标方程: ρ=2 . (1)将直线l的参数方程化为普通方程,圆C的极坐标方程化为直角坐标方程; (2)若平面直角坐标系横轴的非负半轴与极坐标系的极轴重合,试判断直线l和圆C的位置关系.
【简答题】Her fingerprint left on the scene was a _____ of her guilty. 她在现场留下的指纹是她的犯罪证明。
【简答题】已知直线l的参数方程: (t为参数)和圆C的极坐标方程: . (Ⅰ)将直线l的参数方程化为普通方程,圆C的极坐标方程化为直角坐标方程; (Ⅱ)判断直线l和圆C的位置关系.
【单选题】When he was questioned about the necklace, he__________that he had ever seen it.