单选题
We believe that a smart city should provide an urban environment for its residents who can enjoy a high quality of life.
【正确答案】
C
【答案解析】本题的关键是正确理解词义。该句整体上是主谓宾结构，宾语从句中的residents又有定语从句修饰。smart city译为“智慧城市”，urban environment译为“城市环境”，high quality of life译为“高品质生活”。