The drinking water has become contaminated
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The drinking water has become contaminated with lead.
A:polluted B:treated C:tested D:corrupted
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答案：A
本句意思：饮用水被铅污染了。contaminate意为“把……弄脏，污染”，与pollute（污染） 意思相近。treat对待，看待; test考试；测验，考查；corrupt使道德败坏；使腐败。