2021年考研英语一答案如下：
Part A：Reading Comprehension
1. Passage 1：D
2. Passage 2：C
3. Passage 3：B
4. Passage 4：A
Part B：Translation
1. 翻译：The rapid development of technology has brought about significant changes in our daily lives.
2. 翻译：In order to achieve sustainable development, we need to strike a balance between economic growth and environmental protection.
3. 翻译：The teacher's encouragement played a crucial role in my academic success.
4. 翻译：It is essential to maintain good communication with family members to strengthen family ties.
Part C：Writing
1. Essay：Write an essay on the topic "The Importance of Environmental Protection". You should write at least 160 words but no more than 200 words.
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