At present , the butter factory is still polluting the river though it to stop.
A. ordered
B. has ordered
C. will be ordered
D. has been ordered
网友回答
A. ordered
B. has ordered
C. will be ordered
(答案→)D. has been ordered
解析：考查时态语态。句意：当前黄油企业仍然在污染河流尽管已经被命令停止了。根据上下文的时间状语at present时态确定为现在时，从语态上看肯定是被动，要求停止生产是已经发生的事情。选D。