To make Beijing our worthy capital, we must get it（ ）of polluted air, among other things.
A、collected
B、washed
C、cleansed
D、developed
【正确答案】：C
【题目解析】：本题考查词义辨析。collected：收集，采集；washed：洗，洗涤；cleansed：清洁，清洗；developed：发展。句意：为了使北京成为我们有价值的首都，除其他外，我们必须净化它的污染空气。故C选项符合题意。
