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The drinking water is contaminated with impurities.
A:blackened
B:polluted
C:darkened
D:mixed
B:polluted
C:darkened
D:mixed
参考答案
参考解析
解析：本句意思：饮用水被杂质污染了。contaminate意为“弄脏，污染”，与pollute（污染）意思相近。blacken使变黑；darken使变暗；mix混合。
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