筹建中的安徽芜湖核电站芭茅山厂址位于长江南岸繁昌县狄港镇，距离繁昌县县城约17km，距离芜湖市区约35km，距离无为县城约18km，距离巢湖市区约50km，距离铜陵市区约36km，距离合肥市区约99km．以上这组数据17、35、18、50、36、99的中位数为（   ）．

    My cousin Sandy is1English girl. Her2name is White. She is 12. The girl is3. In her room, her books and tape player4in the bookcase. Her pencil box is on the5. Her ruler is on the desk, too. And a set 6 keys are in her pencil box. A baseball is under the desk,7 it's not Sandy's. It's her brother8. Sandy has a computer. 9 on the table. There is a photo on the wall. Two girls are in the photo. Do you know10the two girls are? Well, they are Sandy's good friends, Mary and Anna.