根据您提供的信息，2019年考研英语一的作文分为两个部分：
1. 小作文：要求写一封介绍信，介绍“Aiding Rural Primary School”项目中的具体细节。
2. 大作文：图画作文，主题为个人品质，如坚持、互帮互助、合作等。
大作文的参考范文如下：
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The cartoon presents a thought-provoking scene where two climbers are ascending a hill. One of them, overcome by fatigue, sits on the ground with a look of exhaustion and a desire to give up. In contrast, the other climber, full of energy, stands beside him, smiling and encouraging his companion to persevere. This image is a powerful reminder of the importance of persistence.
```
以上作文内容简要描述了图画内容，解释了其隐含的意义，并给出了作者的评论。您可以根据这个结构来准备自己的作文。