考研英语摸底测评答案如下：
1. What is the main topic of the passage?
答案：The passage discusses the impact of social media on young people's mental health.
2. According to the passage, how do smartphones affect students' sleep patterns?
答案：Smartphones, particularly those with blue light, can disrupt students' sleep patterns, leading to insufficient rest.
3. What is the author's opinion about the effectiveness of online learning during the pandemic?
答案：The author believes that while online learning has its benefits, it also poses significant challenges, especially for students who lack access to reliable internet connections.
4. Choose the word that best completes the sentence: "The professor's lecture was so engaging that it ____________ the entire class."
答案：captivated
5. What is the purpose of the last paragraph in the passage?
答案：The last paragraph summarizes the main points discussed and emphasizes the importance of addressing the issues raised in the passage.
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