单选题 A copyright protects authors and creators against______reproduction or use of writings and other original works of authorship for the life of the author plus 50 years.
【正确答案】 D
【答案解析】解析:形容词词义辨析。undermined“潜行的,被破坏的”;unduplicated“未复制的”;unexpired“未到期的”;unauthorized“未被授权的”。根据版权的相关知识,可知答案为D。