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    精英家教网 > 高中英语 > 题目详情
    The town’s drinking-water _____ with prim chemicals at present.
    A．contaminatesB．is contaminated
    C．is being contaminatedD．has been contaminated
    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，
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