5. When he says "I have watched death from the sidelines", the author may mean _______.A. he has nearly died recentlyB. he has watched many people dyingC. he has learned his friend died youngD. he has imagined his own death

本题考查对英语习语“from the sidelines”的理解，以及结合语境推断句子隐含含义的能力。关键在于理解“sidelines”的比喻意义——“作为旁观者”，而非亲身经历。需排除选项中与“旁观”矛盾或不匹配的选项。

1. 解析习语
   “from the sidelines”原意为“从场外、旁观者的角度”，如体育比赛中的观众。引申到句子中，表示作者以旁观者的身份目睹死亡，而非亲身经历或想象。

2. 选项分析

   • A. he has nearly died recently
     若是“差点死亡”，作者应是“亲身经历死亡”，与“旁观”矛盾，排除。
   • B. he has watched many people dying
     “目睹许多人死亡”与“从旁观者角度看死亡”完全吻合，正确。
   • C. he has learned his friend died young
     “听说朋友去世”是单一事件，且“learned”（听说）不等于“watched”（目睹），排除。
   • D. he has imagined his own death
     “想象死亡”是主观行为，与“旁观”矛盾，排除。