题目

选择合适的介词填空with in on behind beside1. The girl _______ white skirt is Kate.2. That girl _______ long hair.3. The boy _______ Sally is Peter.4. Who’s the boy _______the bike?5. Who’s _______the door? I can’t see you. 答案：【答案】1. in 2. with 3. beside 4. on 5. behind 【解析】略双曲线（a≥1，b≥1）的离心率为2，则的最小值为（ ）A．B．C．2D．