【题目】Students in English-speaking countries usually address their man teacher “sir”, but _______ their woman teacher “madam”.
A. seldom they address B. do they seldom address
C. seldom do they address D. they seldom do address
在线课程【答案】C
【解析】试题分析：seldom很少，否定含义，放在句首，句中的主谓要用倒装结构。句意：讲英语国家的学生通常尊称其男教师为“先生”，但很少称其女教师为“女士”。