2011年考研英语答案解析如下：
一、阅读理解
1. 第一篇文章主要讲述了全球变暖对北极熊生存的影响。答案为：D。
2. 第二篇文章讨论了人工智能在医疗领域的应用。答案为：B。
3. 第三篇文章介绍了人类大脑的奥秘。答案为：C。
4. 第四篇文章讲述了科学家如何通过基因编辑技术治疗疾病。答案为：A。
二、完形填空
1. 第一段：A 2. 第二段：C 3. 第三段：D 4. 第四段：B 5. 第五段：D
三、翻译
1. With the rapid development of technology, people are increasingly aware of the importance of protecting the environment.
2. It is widely believed that the Internet has greatly facilitated our daily lives.
3. In order to improve our communication skills, we should practice speaking and writing in English as much as possible.
四、写作
（1）考研英语作文题目：Do you agree or disagree with the following statement? A good teacher is more important than a good school. Use specific reasons and examples to support your answer.
（2）考研英语作文题目：Some people prefer to work for themselves. Others prefer to work for others. Which do you prefer? Give specific reasons and examples to support your answer.
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