【题目】We are lucky to be among the generation of people who have ______ and experienced the great social changes in our country.
A. conflicted B. responded
C. witnessed D. associated
在线课程【答案】C
【解析】
试题分析：句意：我们是幸运的一代人我们见证了国家巨大的变化。 A. conflicted冲突；B. responded 回应；C.witness 见证；D. associated相关。故选C。