成绩终身有效，但注意：
1. 找工作/升学常用近2年成绩——多数单位或学校要求2年内成绩单，过期可能需重考。
2. 纸质成绩单丢了——官网可补办「成绩证明」，效力同等。
3. 考完四级再考六级——四级成绩无时间限制，过425分就能报六级。
其他关联问题硬核速答
1. 报名：3月、9月（具体看学校通知）。
2. 考试：6月、12月第三个周六。
3. 准考证：考前一周打印。
1. 官网：「中国教育考试网」，输准考证号+姓名。
2. 微信小程序搜「CET」查分。
标题：Community Volunteer Day Draws Enthusiastic Participation
Last Sunday witnessed a community volunteer event organized by our university, attracting over 300 students. Participants engaged in activities like cleaning public parks and assisting elderly residents. The event not only fostered a sense of responsibility but also strengthened community bonds. Many volunteers expressed that they gained practical skills and a deeper understanding of teamwork. Such initiatives are believed to encourage more youth to contribute to social welfare.