英语考研模考卷答案解析如下：
1. 阅读理解
- 答案：D。解析：根据文章最后一段，作者通过实验证实了睡眠对于记忆巩固的重要性，故选D项。
- 答案：B。解析：第二段提到，尽管电子产品的普及影响了年轻人的睡眠质量，但文章并未直接将其归咎于电子产品本身，而是提到它们的使用习惯，因此选B项。
2. 完形填空
- 答案：C。解析：根据上下文，此处应选择表示转折的连词，故选C项。
- 答案：A。解析：此处需要填入一个表示原因的短语，结合语境，选A项。
3. 翻译
- 翻译：With the rapid development of technology, online education has become increasingly popular among young people.
- 翻译：His unexpected victory at the tournament brought him a great deal of fame and fortune.
4. 写作
- 篇章：作文题目为“校园环保活动的重要性”。以下为范文：
- With the increasing environmental problems, it has become more and more important to promote environmental protection activities on campus. Firstly, these activities can raise students' awareness of environmental protection. Secondly, they can help students form good habits of environmental conservation. In conclusion, it is our responsibility to participate in campus environmental protection activities and contribute to the protection of our planet.
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