答案：A

题目分析：考查时态，由时间状语since 1992可以知道句子时态是完成时，句子The country life he was accustomed to是个从句，句子的主语是The country，所以选A， was accustomed to意思“习惯于”

点评：考查时态要抓住时间，这题有明显的时间状语：since 1992，所以很简单，再就是结合上下文。

即学即练：Let the soldiers sleep for a while because they ______ the injured for twelve hours nonstop.

A. rescued  B. rescue  C. have been rescuing  D. had rescue

解析：注意句中的时间状语for twelve hours nonstop. 故选C。