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

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

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

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humeina041 幼苗

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C

“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，

1年前

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