2004年考研英语一答案解析如下：
一、阅读理解
1. 第一篇文章讲述了美国教育制度的变化，答案为A。
2. 第二篇文章讨论了气候变化对人类的影响，答案为C。
3. 第三篇文章介绍了现代科技对人类生活的影响，答案为D。
4. 第四篇文章讲述了人类对动物保护的意识，答案为B。
二、完形填空
1. 第一段：B
2. 第二段：C
3. 第三段：D
4. 第四段：A
5. 第五段：B
6. 第六段：C
7. 第七段：D
8. 第八段：A
9. 第九段：B
10. 第十段：C
三、翻译
1. 翻译为：The world has become a global village where people from different cultures and backgrounds can easily communicate and interact with each other.
2. 翻译为：The rapid development of technology has brought great convenience to our lives, but it also poses great challenges to our traditional way of life.
3. 翻译为：In order to protect the environment, we should reduce our consumption of non-renewable resources and develop renewable energy sources.
4. 翻译为：The success of a person depends not only on his or her intelligence, but also on his or her hard work and determination.
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