很抱歉，我无法提供2019年英语四级考试的完整答案，因为这些信息是保密的，只会在官方发布。然而，我可以为你提供一些优秀范文作为参考。
以下是一篇可能的优秀范文，仅供参考：
标题： 我的大学生活
正文：
我一直记得，当我第一次踏进这所大学时的情景。那是我生命中的一个重要转折点，我感到既兴奋又紧张。现在，我已经在这里度过了几个春秋，我的大学生活充满了挑战和收获。
首先，学习是我大学生活的核心。我选择了几个我真正热爱的专业，并投入了大量的时间和精力去学习。我经常熬夜，甚至牺牲周末的时间来学习。但是，这种努力是值得的，因为我从中学到了很多知识，也结交了很多志同道合的朋友。此外，我还参加了一些课外活动，如学术研讨会、社团和志愿者工作，这些活动也帮助我发展了领导能力和团队合作精神。
大学生活中的挑战是不可避免的。我记得有一次期末考试，我熬夜复习到深夜，但仍然感到焦虑和不安。然而，通过不断的努力和自我激励，我最终克服了这些挑战，取得了优异的成绩。这种经历让我更加自信和坚定，我知道只要我付出努力，我就能够克服任何困难。
在大学里，我学会了如何平衡我的生活。我意识到，仅仅追求学术成功是不够的。我也需要关注我的身体健康和心理健康。因此，我开始注重饮食和锻炼，并学会了如何管理我的时间，以确保我有足够的休息和放松时间。
总的来说，我的大学生活是一段非常充实和有意义的经历。它不仅让我学到了很多知识，还让我成长为一个更自信、更坚强的人。我相信，在未来的岁月里，这些经验和教训将对我产生积极的影响。
希望这个范文能够为你提供一些启示和帮助。记住，写作时应该围绕主题展开，表达自己的观点和情感，并使用适当的语法和词汇。祝你考试顺利！
以下是一篇可能的优秀范文，供您参考：
题目：How to Achieve Success
Dear Editor,
Success is a complex concept, and it requires a combination of effort, perseverance, and self-discipline to achieve. In my opinion, there are three key factors that contribute to success: setting clear goals, developing a strong work ethic, and maintaining a positive mindset.
Firstly, setting clear goals is essential for success. Without clear objectives, we are lost and unable to focus our efforts in the right direction. We must identify our strengths and weaknesses, and set goals that are both challenging and realistic. By doing so, we can avoid getting overwhelmed by the task at hand and stay motivated to keep moving forward.
Secondly, developing a strong work ethic is crucial for success. Success requires hard work, dedication, and perseverance. We must approach our tasks with a sense of urgency and purpose, and strive to improve ourselves constantly. We should avoid procrastination and seek opportunities to learn and grow. By doing so, we can develop a strong work ethic that will serve us well in achieving our goals.
Lastly, maintaining a positive mindset is essential for success. We must approach every challenge with an attitude of positivity and optimism. We should not give up easily when things get tough, but rather persevere and keep pushing forward. By maintaining a positive mindset, we can overcome obstacles and gain momentum towards achieving our goals.
In conclusion, success is not easy to achieve, but with clear goals, a strong work ethic, and a positive mindset, we can achieve our goals and become successful individuals. I believe that with effort and discipline, we can turn our dreams into reality. Thank you for your time.
Best regards,
[Your Name]
写一篇优秀的英语四级范文需要注意以下几点：
1. 明确主题：在开始写作之前，需要明确主题，围绕主题展开论述。
2. 结构清晰：文章应该有一个清晰的结构，包括开头、主体和结尾。开头应该简明扼要地引入主题，主体部分应该分点列出论据，每个论据应该简洁明了，结尾部分应该总结全文，并适当提出建议或展望。
3. 用词准确：用词准确是优秀作文的基本要求，需要选择与主题相关的词汇，避免使用过于简单的词汇和短语。
4. 语法正确：语法正确也是优秀作文的基本要求，需要避免语法错误，确保句子结构正确，时态、语态、主谓一致等语法要素也要正确。
5. 表达流畅：表达流畅是优秀作文的重要标准，需要注重句子之间的连贯性和逻辑性，可以适当使用连接词和过渡句，使文章更加流畅自然。
下面是一篇可能的英语四级范文，主题是关于如何保持健康的：
[题目：如何保持健康]
Health is one of the most important things in life. However, it's not always easy to maintain. Here are some tips on how to keep healthy.
Firstly, it's important to have a balanced diet. Eating a variety of fruits, vegetables and whole grains is essential for providing your body with the nutrients it needs to function properly. Avoiding processed foods and sugary snacks is also crucial.
Secondly, regular exercise is essential for maintaining a healthy lifestyle. It boosts your mood, strengthens your immune system and helps you sleep better. Try to include at least some aerobic exercise in your daily routine, such as walking, running or swimming.
Thirdly, getting enough sleep is crucial for maintaining health. A good night's sleep helps your body recover and rejuvenate, and it's essential for maintaining a healthy mind and mood.
Finally, it's important to avoid stressful situations that can harm your health. Try to manage your stress levels by practicing relaxation techniques, such as meditation or deep breathing.
In conclusion, maintaining a healthy lifestyle is not only beneficial for your physical health, but also for your mental well-being. By following these tips, you can live a happier and healthier life.
这只是一个示例，具体的内容和结构可以根据题目要求进行调整。
