单选题
The mayor think that this is a rare newspaper article ______ the problems of overcrowded cities.
A. to concern
B. concerned
C. concerning
D. being concerned
A
B
C
D
【正确答案】
C
【答案解析】
[解析] 本题考查定语从句的用法。分析四个选项可知,空格处只能填入concerning,concerning the problems of overcrowded cities是定语从句,在句中作定语修饰article。其他三个选项都没有这种作用。所以本题答案是选项C。
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