问题
选择题
As the quality of the city’s air continues to give rise to ________, the residents are encouraged to drive cars less often.
A．descriptions
B．compromise
C．concerns
D．emergency
答案
C
题目分析：考查名词：A. descriptions描述，B. compromise妥协，让步C. concerns关心，担心，D. emergency紧急情况，句意：因为这个城市的空气质量继续引起关注，居民被鼓励少开车。选C。