Now many cities in China ____ water pollution

题目

Now many cities in China ____ water pollution
a.are prohibited b.are warned of
选B A错哪呢?

答案

如果想说水污染在城市中被禁止,应该这样说：
Water pollution are prohibited in many cities in China now.
如果用cities are prohibited,是“城市被禁止”的意思,不通.
B:现在中国的许多城市被警告存在水污染现象.