Question

The cost of living in Chengdu is among the lowest in China, ________ the quality of life is probably one of the highest.

A．since

B．when

C．as

D．while

Answer 1

D

试题分析：since 由于，自从……以来；when当……时；as 伴随，随着；while当……时，然而。句意：在成都的生活花费属于中国消费最低的城市之一，然而生活水平却处于最高水平当中。结合语境可知选D。