在备考考研英语的过程中，视听说教程的答案至关重要。以下是对该教程中部分题目的原创解答：
1. 题目：What is the main purpose of the passage?
答案：The passage aims to inform the readers about the benefits of exercise on mental health.
2. 题目：Which of the following is NOT mentioned as a reason for the increase in obesity rates?
答案：The passage does not mention increased screen time as a reason for the increase in obesity rates.
3. 题目：What does the author imply about the relationship between sleep and academic performance?
答案：The author implies that there is a positive correlation between sufficient sleep and better academic performance.
4. 题目：According to the passage, what is the most effective way to reduce stress?
答案：The passage suggests that engaging in physical activity is the most effective way to reduce stress.
5. 题目：What is the author's attitude towards the use of technology in the classroom?
答案：The author expresses a neutral attitude towards the use of technology in the classroom, acknowledging both its benefits and drawbacks.
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