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阅读和观察下面的材料及漫画,结合教材知识回答问题: (1)材料和漫画分别说明了什么?共同告诉我们一个什么道理?

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阅读和观察下面的材料及漫画,结合教材知识回答问题:

(1)材料和漫画分别说明了什么?共同告诉我们一个什么道理?
                                                                                                                                                               
                                                                                                                                                               
                                                                                                                                                               
                                                                                                                                                                

(2)作为中学生,我们应如何文明上网?
                                                                                                                                                              
                                                                                                                                                              
                                                                                                                                                             

(3)针对青少年沉溺网络的问题,请你给社会、学校、家庭和经营者提出几点建议。
                                                                                                  &nb
(1)材料一说明,网络可以使我们随时查阅各种信息;与外国朋友的交往,