The drinking water has became contaminated with lead.

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问题 The drinking water has became contaminated with lead.

选项 A、treated
B、tested
C、corrupted
D、polluted

答案D

解析题意：饮用水已经被铅污染了。划线词的原型为动词，意为“污染”。A项意为“对待，治疗”，例：The nurse always treated the sick and wounded with kindness．这位护士总是以蔼然可亲的态度对待伤病员。B项意为“测试，测验”，例：The manufacturers warrant that all the machines they supplied arestrictly tested．生产厂家保证他们生产的所有机器都经过严格检验。C项意为“腐败，堕落”，例：It is my duty to pronounce judgment against that corrupted leader．提出反对那个腐败领导人的意见是我的责任。D项意为“污染”，如：We love the sea，yet we pollute it．我们热爱大海，然而我们却污染了它。故选D。

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