题目

Mary will never forget the first time she saw him. He suddenly appeared in class one day, __61__ (wear) sun glasses. He walked in as if he had bought the school. And the word quickly got around __62___he was from New York City. For some reason he sat beside Mary. Mary felt __63__ (please), because there were many empty seats in the room. But she quickly realized that it wasn’t her, it was probably __64__ fact that she sat in the last row. Although he thought he could escape attention by sitting at the back, he was wrong. It might__65__ (make) it a little __66__ (difficult) for every13．（Ⅰ）点P的直角坐标为$（-\sqrt{2}，\sqrt{2}）$，求它的极坐标（写出一个即可）；（Ⅱ）在同一平面直角坐标系中，经过伸缩变换$\left\{{\begin{array}{l}{x'=5x}\\{y'=3y}\end{array}}\right.$后，曲线C变为曲线2x'2+8y'2=1，求曲线C的方程．