阅读材料，回答问题：

材料一：《中小学法制教育指导纲要》定，初中生法治教育的主要内容有：进一步学习宪法基本知识，增强宪法意识……

材料二：建设社会主义法治国家，每个公民都不能袖手旁观。我们不仅是法治中国的受益者，更应该是参与者和推动者。

根据实验结果分析并回答下列问题：

某研究性学习小组利用如图甲所示电路测量电池组的电动势E和内阻r，根据实验数据绘出如图乙所示的 图线，其中R为电阻箱读数，I为电流表读数，由此可以得到E＝

____ V，r＝____ Ω.

    I'm Lisa. My father is a doctor. He often drives his car to work. My mother is an English teacher. She always walks to work. She says walking is a good way to exercise. My mother also likes going shopping. She often does some shopping on Sundays. I am a student. I usually ride a bike to school, but sometimes I come to school by bus. I like watching TV. I only watch TV on Saturday and Sunday evenings.

①是公民参与政治生活的重要平台

②有利于党和政府科学决策和民主决策

③是公民参与管理国家和社会的基础和标志

④有利于保证人民的知情权、表达权、监督权