单选题 Her talk at the seminar clearly______from the topic the supervisor expected in the field of sociology.
A. alternated B. amplified C. designated D. diverged

【正确答案】 D
【答案解析】[解析] 四个选项的意思分别是：alternated“交替，轮流”；amplifled“夸大，增强”； designated“指定的，指派的”；diverged“偏离，离题”。根据句意可知，应选择D。