2021年考研英语一B卷答案如下：
Part A: Reading Comprehension
Section 1
1. D
2. A
3. B
4. C
5. D
Section 2
6. C
7. B
8. D
9. A
10. C
Section 3
11. B
12. C
13. A
14. D
15. B
Part B: Translation
16.
The rapid development of technology has greatly changed our lives.
17.
To achieve success, one must be determined, persistent, and hardworking.
18.
The teacher's encouragement and guidance played a crucial role in my academic progress.
Part C: Writing
For the essay, please refer to the specific topic and instructions provided in the exam. The essay should be a well-structured argumentative piece, showcasing critical thinking and logical reasoning.
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