单选题   In recent weeks both housing and stock prices have started to retreat from their irrationally amazing highs.
 
【正确答案】 C
【答案解析】 题干译文：近几周房价和股价开始从不合理的惊人的高位回落。划线词的含义是“不合理地”。选项A为“不合时宜地，过早地”；选项D为“异常地，不依惯例地”。