遇到一個應該是GRE的題目,空格應選兩個選項,我目前在網路上好像沒找到答案: The author argued that pity inteferes with natutal progress by artificially pres erving weakness; pity, in other words, is not a symptom but _____ of the world's demise. A. an omen B. a vehicle C. a reminder D. an extension E. an instrument F. a harbinger 有趣的是我問了AI,chatGPT和Gemini同樣選了選項B & E; Perplexity和Copilot則都選了A & F,不同LLM在語言題目給出了不同答案,我自己看完是覺得好像也都可以,不確定標準答 案是什麼,不知道各位會怎麼選?