题干
The famous actor keeps fit by ____ for half an hour every morning.
A：acting out
B：bringing out
C：giving out
D：working out
答案(点此获取答案解析）
D
A：acting out
B：bringing out
C：giving out
D：working out
在椭圆
上，
、
分别是椭圆的两焦点，且
，则
的面积是（ ）
