4. Where has Peter done volunteer work?

A.       B.            C.

3. Where are they going on vacation?

A.        B.             C.

2. What are they going to do this Sunday?

A.          B.             C.

1. What’s the weather like?

(2)设且抛物线在点处的切线与轴的交点为，求的最小值和此时椭圆的方程。

吉安市高三第一次模拟考试理科数学试卷

，求的离心率；

(1)若的焦点恰好是的上焦点，且；过点