题目

设椭圆（，）的右焦点与抛物线的焦点相同，离心率为，则此椭圆的方程为（     ） A.   B. C.  D. 答案：B According to my grandparents, it is a good idea to eat chicken soup when you have a cold.  __      , scientists agree with them. A. Sooner or later   B. Once in a while    C. To be exact       D. Believe it or not