题干
He hurried to the station only _______ that the train had left.
A：to find
B：finding
C：found
D：to have found
答案(点此获取答案解析）
A
He hurried to the station only _______ that the train had left.
A：to find
B：finding
C：found
D：to have found
的焦点为
，准线与
轴的交点为
，点
在
上且
，则
的面积为( )