题目

已知是双曲线上的三个点，经过原点，经过右焦点，若且，则该双曲线的离心率是（   ） A.B.C.D. 答案：B把下列句子重新排序，组成一段完整的对话。A. Can I speak to Jim, please?B. When is John’s birthday?C. I am making a birthday chart for our class. I don' t know yours, John's and Sue's, when is your birthday?D. My birthday is in December. Oh, Sue’s birthday is in December, too.E. This is Jim speaking. What are you doing?F. Not at all.G. Thank you.H. It is on October 3rd.正确的顺序：________________________________________