题目

The river　　　such heavy pollution already, it may now be too late to clean it up. A. has suffered             B. has happened C. has offered                  D. has filled 答案：【解析】选A。考查动词词义辨析。句意:这条河已遭受严重污染, 现在要想将它清理干净可能已太晚了。suffer遭受; happen发生; offer提供; fill充满。

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