【阅读理解】Decibels(分贝) measured in water are different from those measured on land. A noise of one hundred-twenty decibels on land causes pain to human ears. In water, a decibel level of one-hundred ninety-five would have the same effect.
Which of the following is discussed in the paragraph?
A、
The same noise level produces a different effect on land and in the ocean.
B、
Different places may have different types of noises.
C、
The decibel is not a suitable unit for measuring underwater noise.
D、
Different ocean animals may have different reactions to noises.
【正确答案】：A
【题目解析】：
本段第一句话就直接给出了答案。