Such problem ____ air, water, and noise pollutions are becoming more and more serious in some big cities.(本题1.5分)<br> A、 like<br> B、 as<br> C、 of<br> D、 about

Such problem ____ air, water, and noise pollutions are becoming more and more serious in some big cities.(本题1.5分)
A、 like
B、 as
C、 of
D、 about

出自：河南工业大学大学英语

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