The cost of living in Glasgow is among the lowest in Britain, the quality of life is probably one of the highest.
A. since
B. when
C. as
D. while
网友回答
A. since
B. when
C. as
(答案→)D. while
解析：四个选项分别表示从……开始、当……时候、由于和然而，根据题意选D，在格拉斯哥的生活花费在英国是属于最低的，然而生活质量可能是最高的之一。