【解析】
本文紧扣“The greener, the better”主题，采用“问题-措施-个人行动”的结构展开：首先点明当前地球面临的水污染、空气污染、垃圾遍地等环境问题；接着从绿色出行、节约资源、植树造林三方面提出解决办法；最后结合自身实际，阐述学生能做出的环保贡献，内容完整，逻辑清晰，符合写作要求。
【答案】
Nowadays, our earth faces serious problems. Factories pour waste water into rivers, and cars produce much harmful gas. Rubbish is everywhere, making our living space dirty.
To solve these problems, we should take action. First, we can go to school by bike or on foot instead of taking cars. Second, we need to save water and paper in our daily life. Third, we should plant more trees to make the air fresh.
As a student, I will try my best. I will stop using plastic bags and recycle bottles and boxes. I believe the greener we live, the better our earth will be.
【知识点】
环保主题英语写作；“the+比较级，the+比较级”句式；英语议论文结构
【点评】
这篇短文结构层次分明，从环境问题入手，逐步过渡到解决措施和个人行动，紧扣写作主题，语言简洁流畅，合理运用了相关句式，既完成了写作任务，又传递了环保意识，符合书面表达的要求。
【难度系数】
0.6
