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The town’s drinking-water _____ with prim chemicals at present.

A. contaminates     B. is contaminated     C. is being contaminated    D. has been contaminated

C

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,

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