Dumped waste might contaminate water supplies.

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问题 Dumped waste might contaminate water supplies.

选项 A、destroy
B、decrease
C、delay
D、pollute

答案D

解析 这句话的意思是:“倾倒的废物会污染水源。”句中contaminate意为“污染,把……弄脏”,例如,Flies contaminate food.苍蝇污染食物。四个选项中destroy意为“破坏”。decrease意为“降低”,例如,There has been a steady decrease in population in this city.这个城市的人口在持续下降。delay意为“拖延”,例如,Our plane was delayed by fog.我们的飞机因大雾而误点了。pollute意为“污染”,它与划线部分单词含义最近,例如,I feel it is our duty not to pollute our environment.我感觉我们有责任不污染我们的环境。
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