问题
选择题
As the quality of the city’s air continues to give rise to ______, the residents are encouraged to set off fewer fireworks.
A．concerns
B．descriptions
C．catastrophe
D．emergency
答案
A
题目分析：句意：因为城市的空气质量一直引起关注，居民被鼓励燃放更少的烟火。A. concerns关心，担心，B. descriptions描述，C. catastrophe 灾难，D. emergency紧急情况，所以选A。
