单选题 The news that the examination would be held two weeks earlier caused quite a ______ among the students.
A. fluctuation B. torrent C. flutter D. degradation

【正确答案】 C
【答案解析】[考点] 名词词义辨析
[解析] 考试将提前两周举行，这个消息在学生们中间引起了慌乱。C项“flutter恐慌，不安”符合题意。