题目

It was at the bus stop ________ they met for the first time ________ they got to know each other and became good friends.A. that; that B. where; thatC. which; when D. where; when 答案：【答案】B【解析】考查定语从句和强调句。句意：在他们第一次相遇的公共汽车站他们认识了彼此并且成为了好朋友。________ they met for the first time是定语从句，修饰the bus stop，引导词在从句中做地点状语，故要用关系副词where引导该从句。去掉It was和第二个空之后，剩余部分为at the bus stop where they met for已知椭圆的左右焦点分别为，点在椭圆上， ,过点的直线与椭圆分别交于两点.（1）求椭圆的方程及离心率；（2）若的面积为为坐标原点，求直线的方程.