用公式法解﹣x²+3x=1时，先求出a、b、c的值，则a、b、c依次为（　　）

请回答下列问题：

（Ⅰ）设l与C₁相交于A，B两点，求|AB|；

（Ⅱ）若把曲线C₁上各点的横坐标压缩为原来的 $\frac{1}{2}$ 倍，纵坐标压缩为原来的 $\frac{\sqrt{3}}{2}$ 倍，得到曲线C₂，设点P是曲线C₂上的一个动点，求它到直线l的距离的最小值．

根据短文理解，从A、B、C、D四个选项中选择正确答案填空。

    “Who would you like to change your life with if possible?” Last week, we asked many middle school students this question. The following are some of their 1.

    Zhang Yike, 12

    I want to change my life with my friend, Wang Xiaohui. She is studying in England now. She has  2 to many countries, such as the US and France. They are the places I wish to visit. What's more, she 3 much better English than me. If I change my life with her, I can visit many beautiful countries, eat delicious 4 and meet different kinds of people there. 

    Qiu Haoran, 14

    I'd like to change my life with my Chinese teacher Miss Zhao. Miss Zhao is a very kind lady. She 5 a lot, so she always has so many 6 stories to tell us. We all like her classes. I also want to be such an excellent teacher and be 7 with my students.

    I will change my life with my elder brother. My brother is a college student now. He doesn't have to go to class all the time. He can study 8 he is interested in. And he even has a part-time job to make money. To 9, all of these sound very interesting. I really wan t a life 10 this.