单选题 A firm's public image, if it is good, should be treasured and protected. It is a valuable asset that usually is built up over a long and satisfying relationship of a firm with its public.
【正确答案】 D
【答案解析】解析：pretext借口，托辞；enlightenment启迪，教化；adomment装饰；advantage优势，优点。句意是，应珍视并维护一个公司的公共形象。它是一个有价值的优势，通常要经过很长一段时间令人满意的公司与公众的互动才能建立起来。所以正确答案为D选项。