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发布时间:2023-10-09 07:08:49

[单项选择]Why do lakes in the United States and Canada become dead lakes
A. Fish in the lakes die because acid rain deprives them of oxygen.
B. Fish in the lakes die from taking in poisonous substances released from the acids.
C. Fish in the lakes die from direct contact with accumulated acid in the water.
D. Air pollutants are dissolved in the water and thus kill the fish.

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