考研作文的开头和结尾都非常重要，因为它们通常是阅卷老师首先和最后阅读的部分，能够给老师留下深刻的印象。以下是一些关于如何开头和结尾的建议：
开头
总-分-总结构
开头部分：首先用一两句话引出主题，可以解释题干中的关键概念，并通过过渡句连接到下文。
示例：
```
As is symbolically illustrated in the cartoon, the rapid development of technology has revolutionized the way we live and work.
```
引用名言
使用名人名言或自编名言来开头，可以增加文章的文采和深度。
示例：
```
"There is no doubt that the future belongs to those who believe in the beauty of their dreams." - Eleanor Roosevelt
```
描述图片或图表
如果题目中包含图片或图表，可以通过描述它们来引入主题。
示例：
```
From the picture we can observe a sharp contrast between the two individuals, one who is determined to finish her work promptly, and the other who seems to procrastinate until the last minute.
```
提出问题
通过提出问题来引起读者的兴趣，并引导文章进入主题。
示例：
```
What calls for special attention in the modern world is the issue of environmental protection and sustainable development.
```
结尾
总结全文
在结尾部分，简要总结文章的主要观点和结论，确保与开头呼应。
示例：
```
In conclusion, the integration of technology into our daily lives has both positive and negative implications, and it is crucial for us to strike a balance between its benefits and drawbacks.
```
提出建议
根据文章的内容，提出一些具体的建议或展望。
示例：
```
It is imperative that we continue to invest in education and research to ensure that we stay at the forefront of technological advancements.
```
呼吁行动
结尾时呼吁读者采取行动或思考，增强文章的感染力。
示例：
```
It is hoped that policymakers will take decisive action to address the challenges posed by climate change and prioritize the well-being of our planet.
```
回归主题
回到文章开头提出的关键概念，形成闭环。
示例：
```
As we have seen, the impact of technology on society is profound and multifaceted, and it is our responsibility to navigate these changes wisely.
```
总结
开头和结尾是考研作文中最为关键的部分，通过引人入胜的开头和总结性的结尾，可以有效提升文章的整体得分。建议同学们在写作时，先列出详细的大纲，确保开头和结尾与文章主体内容一致，并且注意句子的连贯性和逻辑性。