The government ______ air quality in urb
问题:
The government ______ air quality in urban areas from levels one to five: excellent, fairly good, slightly polluted, poor and dangerous.
A.distributes
B.arranges
C.classifies
D.divides
The government ______ air quality in urban areas from levels one to five: excellent, fairly good, slightly polluted, poor and dangerous.
A.distributes
B.arranges
C.classifies
D.divides