绿色校园提案信
题目要求：你发现校园中存在能源浪费现象（如教室无人时灯未关、大量使用一次性餐具）。
请以学生李华的名义给校长写一封提案信，要求：
①描述现存问题；
②提出改进方案（至少3点）；
③预测实施效果。要求数据具体，逻辑严谨。
参考作文地带整理范文：
Dear Principal Wang,
Recent observations reveal alarming energy waste: 32% of classrooms had lights left on after school hours last month, while the cafeteria uses 500 disposable plastic boxes daily.
To address this, I propose:
1) Install motion-sensor lighting systems, which reduced energy consumption by 28% in City Experimental High School.
2) Provide reusable stainless steel lunchboxes with school logos, cutting plastic waste by 80%.
3) Launch an "Eco Monitor" program where students audit energy usage weekly. Implementing these measures could save 15,000 kWh annually—equivalent to planting 1,200 trees.
More importantly, it will cultivate lifelong environmental stewardship.
I sincerely hope you will consider this green transformation.
Respectfully,
source from :liuxuepaper.com
Li Hua
（147词）
