2012年12月大学英语六级考试阅读疑难杂句5
They should be quick to respond to letters to the editor, lest animal rights misinformation go unchallenged and acquire a deceptive appearance of truth.
【词汇突破】
lest 以免，以防 (后面所接从句需要使用should+动词原型的虚拟语气)
acquire 获得
deceptive 欺骗性的
【主干识别】They should be quick to respond to letters to the editor 加情态动词的主系表结构。
【其他成分】 lest animal rights misinformation go unchallenged and acquire a deceptive appearance of truth.