从方框中选择适当的选项补全对话。
A. See you then. B. When shall we go? C. May I speak to Lucy?
D. This is Mike. E. Where shall we meet? |
A: Hello! ____
B: Speaking. Who is that?
A: ____ Lucy, I want to do shopping this afternoon. Let's go together.
B: OK. ____
A: Let's make it half past three.
B: ____
A: At the school gate of our school.
B: All right. ____
A: See you.
的结果正确的是（ ）
是双曲线
上不同的
三点，且
连线经过坐标原点，若直线
的斜率乘积
，则该双曲线的离心率为（ ）