在走廊的英语阅读中，答案如下：
1. 问题：What is the main idea of the passage?
答案：The passage primarily discusses the impact of technology on modern society.
2. 问题：Which of the following is NOT mentioned in the passage?
答案：The passage does not mention the effects of technology on the environment.
3. 问题：What is the author's attitude towards the use of smartphones?
答案：The author expresses a mixed attitude, acknowledging the benefits while also highlighting the negative aspects.
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