The town’s drinking-water with prim chemicals at present.
A. contaminates
B. is contaminated
C. is being contaminated
D. has been contaminated
网友回答
A. contaminates
B. is contaminated
(答案→)C. is being contaminated
D. has been contaminated
解析：“这城市的饮用水目前正受到有毒化学药品的污染。”drinking-water与contaminate之间存在被动关系，由at present可知应用进行时的被动式，