Look at the picture. Who is the girl? She is my friend. Her name is Alice Black. She is an English girl.

       Alice has a big family. Her grandparents have two daughters and one son — her father. Alice lives with her grandparents, parents, two brothers and one sister. Alice has two dogs — Bobby and Tony. Bobby is black and Tony is white. Alice likes them very much. Alice is a middle school student. She has a good friend at school. Her name is Helen. They are cousins, too.

“十一黄金周”期间，我市某手机店用高音喇叭从早到晚反复播放商品广告，噪声严重干扰了人们购物及休息，受到了有关部门的处罚。这一事实告诉我们（  ）

①公民应先履行义务，后享受权利②每个公民在法律上都具有同样的权利和义务③要把行使权利和自觉履行义务结合起来④绝对的权利和自由是不存在的

目前，有不少中学生手机不离手，用手机聊天、打网络游戏、看小说、甚至浏览不良信息。这警示我们青少年应（    ）