【题目】_____ there is still a long way to go, we believe that the doctor-patient relationship in China is gradually improving.
A. Because B. Unless
C. Although D. Once
在线课程【答案】C
【解析】
考查让步状语从句。句意：尽管仍有很长一段路要走，但是我们相信中国的医患关系正在改善。根据句意可知，主从句之间构成让步关系。Because因为；Unless除非； Although 尽管；Once一旦。故选C。