Examination, geometric proof, matrix polar coordinates and parametric equation inequality, 42. In 2008, I took the college entrance examination in Jiangsu. If you are a science student in Jiangsu, choose two exams from the above four books. In the additional questions, each question scores 10, and the general questions are relatively simple (after all, you have to complete four big questions in 30 minutes, and the other two are elective series 2).