单选题 ______ serious disadvantage of the existing plant is the lack of adequate ventilation; workers frequently complain of nausea and headaches.

【正确答案】 C
【答案解析】本题考查限定词(修饰名词的非形容词,如a, the, this, any, your, what等)。any表示“一些”,主要用于疑问句和否定句,后接可数名词复数或不可数名词。other后接名词复数。another表示“另一个”,后接单数名词。disadvantage是单数,故选(C)another。