問題詳情
【題組】42. How is the term “masking” explained in the story?
(A) It is caused when pollutants enter the ocean and block the path of sea life.
(B) It happens when all sound is blocked out of a particular part of the ocean.
(C) It is a method scientists are testing to block human-caused ocean noise.
(D) It happens when noise blocks sounds important to an animal’s existence.
參考答案
答案：D
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