2021考研英语一真题答案详解如下：
第一部分：完形填空
1. 题目：The importance of lifelong learning in the digital age cannot be overstated.
答案：overstated
2. 题目：His enthusiasm for teaching was evident in his _______ lectures.
答案：enthusiastic
3. 题目：The _______ of the experiment was not conclusive, leading to further research.
答案：results
第二部分：阅读理解
文章一：
1. 题目：What is the main idea of the first paragraph?
答案：The increasing reliance on technology in daily life.
2. 题目：Which statement about the author's opinion is NOT supported by the text?
答案：The author believes technology is the sole reason for societal changes.
文章二：
1. 题目：Why does the author mention the case of the missing hiker?
答案：To illustrate the importance of being prepared for emergencies.
2. 题目：According to the text, what is the most effective way to learn a new language?
答案：Immersion in a language-rich environment.
文章三：
1. 题目：What is the main argument presented in the last paragraph?
答案：The need for a balanced approach to managing work and personal life.
第三部分：翻译
1. 英译汉：With the rapid development of technology, the way we communicate has been revolutionized.
答案：随着科技的快速发展，我们的沟通方式已经发生了革命性的变化。
2. 汉译英：中国的传统节日有着悠久的历史和丰富的文化内涵。
答案：Traditional Chinese festivals have a long history and rich cultural connotations.
第四部分：作文
1. 题目：Write an essay on the topic "The Role of Social Media in Modern Society."
答案：（作文内容根据个人观点和结构进行创作）
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