高中英语听说训练(9)新人教版必修3
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高中英语听说训练（9）新人教版必修3
PartA 模仿朗读
听录音,模仿朗读短文,注意画线单词的发音。短文读两遍。
Some scientists say that animals in the ocean are increasinglythreatened by noise pollution caused by human beings.The noise that affects sea creatures comes from a number of human activities.It is caused mainly by industrial underwater explosions,ocean drilling,and ship engines.Such noises are added to natural sounds.These sounds include the breaking of ice fields,underwater earthquakes,and sounds made by animals themselves.
Decibelsmeasured in water are different from those measured on land.A noise of one hundred and twenty decibels on land causes pain to human ears.In water,a decibel level of one hundred and ninety-five would have the same effect.
Some scientists say that animals in the ocean are