题目

阅读理解。 Hi, my name is Simon. I'm 14. I'm in Class Three in Beijing No.1 Middle School. I like soccer best (最). It's very interesting. I have six soccer balls under the bed. I like to play soccer with my friends after school. I'm Nancy. I'm 13. I'm in Nanjing No. 1 Middle School. I'm a student in Class Five. My favorite sport is tennis. I have three tennis balls in the bookcase. I always play tennis with my sister Olivia. Hello, I'm David. I'm 15. I'm in Class Three. I like basketball best. I'm in the school basketball club (社团). I help girls play ba设椭圆的左焦点为F，P为椭圆上一点，其横坐标为，则|PF|=（ ）A．B．C．D．