解析：Questions 17～20 are based_考试试题_公共英语

【单选题】

Questions 17～20 are based on the following talk.

According to the speaker, how do some pesticides get into pondsA．They are applied to aquatic weeds by fish farming.
B．Amphibians release them from their skin.
C．Irresponsible dispose of them in ponds.
D．They are washed into ponds by the rain.

网考网参考答案：D
网考网解析：
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