题目内容
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提问人：网友c********1
发布时间：2022年4月6日 07:59
[单项选择题]
The sense of sound is one of our most important means of knowing what is going on around...Why are scientists surprised by the findings in their noise study（）
A．Because the world is becoming increasingly noisy.
B．Because they have learned that noise is also is also a kind of pollution.
C．Because noise is an unwanted waste for human beings.
D．Because people knew little about noise befor
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