在考研英语2中，难题往往涉及复杂句型、高级词汇和深层次逻辑推理。以下是对几道典型难题的分析及答案：
1. 难题分析：
原文：The rapid development of technology has brought about many changes in our lives, which are both beneficial and detrimental.
答案：The rapid development of technology has brought about many changes in our lives, which are both beneficial and detrimental.
解析：这句话的难点在于对“which are both beneficial and detrimental”这一非限制性定语从句的理解。这里，“which”指代的是“changes”，表示这些变化既有益也有害。
2. 难题分析：
原文：It is widely believed that exercise can improve one's physical and mental health, but recent studies have shown that the relationship between exercise and health is more complex than previously thought.
答案：It is widely believed that exercise can improve one's physical and mental health, but recent studies have shown that the relationship between exercise and health is more complex than previously thought.
解析：这句话的难点在于对“but recent studies have shown that...”这一转折句型的理解。这里，“but”表示转折，引出与前面观点相反的新观点。
3. 难题分析：
原文：The Internet has become an indispensable part of our daily lives, and it has greatly facilitated communication and information sharing.
答案：The Internet has become an indispensable part of our daily lives, and it has greatly facilitated communication and information sharing.
解析：这句话的难点在于对“indispensable”和“facilitated”这两个高级词汇的理解。这里，“indispensable”表示“必不可少的”，“facilitated”表示“促进了”。
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